{
  "title": "Two-Way America: Reverse Migration Corridors 2026",
  "generated_at": "2026-07-14",
  "observation_year": 2024,
  "pairs": [
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 77198,
      "a_to_b_moe_90": 9890,
      "b_to_a": 45803,
      "b_to_a_moe_90": 6792,
      "gross_exchange": 123001,
      "directional_balance": 31395,
      "dominant_direction": "California to Texas",
      "main_flow": 77198,
      "reverse_flow": 45803,
      "reverse_share_of_main": 0.5933
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 52200,
      "a_to_b_moe_90": 8633,
      "b_to_a": 44800,
      "b_to_a_moe_90": 12461,
      "gross_exchange": 97000,
      "directional_balance": 7400,
      "dominant_direction": "Florida to Texas",
      "main_flow": 52200,
      "reverse_flow": 44800,
      "reverse_share_of_main": 0.8582
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 36356,
      "a_to_b_moe_90": 5884,
      "b_to_a": 57915,
      "b_to_a_moe_90": 9105,
      "gross_exchange": 94271,
      "directional_balance": 21559,
      "dominant_direction": "New York to New Jersey",
      "main_flow": 57915,
      "reverse_flow": 36356,
      "reverse_share_of_main": 0.6277
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 53800,
      "a_to_b_moe_90": 9235,
      "b_to_a": 35570,
      "b_to_a_moe_90": 6622,
      "gross_exchange": 89370,
      "directional_balance": 18230,
      "dominant_direction": "Florida to Georgia",
      "main_flow": 53800,
      "reverse_flow": 35570,
      "reverse_share_of_main": 0.6612
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 27404,
      "a_to_b_moe_90": 3951,
      "b_to_a": 52521,
      "b_to_a_moe_90": 7743,
      "gross_exchange": 79925,
      "directional_balance": 25117,
      "dominant_direction": "New York to Florida",
      "main_flow": 52521,
      "reverse_flow": 27404,
      "reverse_share_of_main": 0.5218
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "California",
      "state_b_fips": "06",
      "a_to_b": 28546,
      "a_to_b_moe_90": 5272,
      "b_to_a": 51251,
      "b_to_a_moe_90": 7068,
      "gross_exchange": 79797,
      "directional_balance": 22705,
      "dominant_direction": "California to Arizona",
      "main_flow": 51251,
      "reverse_flow": 28546,
      "reverse_share_of_main": 0.557
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 53816,
      "a_to_b_moe_90": 8136,
      "b_to_a": 21499,
      "b_to_a_moe_90": 5362,
      "gross_exchange": 75315,
      "directional_balance": 32317,
      "dominant_direction": "California to Nevada",
      "main_flow": 53816,
      "reverse_flow": 21499,
      "reverse_share_of_main": 0.3995
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 47978,
      "a_to_b_moe_90": 6610,
      "b_to_a": 25639,
      "b_to_a_moe_90": 4844,
      "gross_exchange": 73617,
      "directional_balance": 22339,
      "dominant_direction": "California to Washington",
      "main_flow": 47978,
      "reverse_flow": 25639,
      "reverse_share_of_main": 0.5344
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 38411,
      "a_to_b_moe_90": 5876,
      "b_to_a": 26540,
      "b_to_a_moe_90": 4304,
      "gross_exchange": 64951,
      "directional_balance": 11871,
      "dominant_direction": "New Jersey to Pennsylvania",
      "main_flow": 38411,
      "reverse_flow": 26540,
      "reverse_share_of_main": 0.6909
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 33839,
      "a_to_b_moe_90": 6269,
      "b_to_a": 26106,
      "b_to_a_moe_90": 3970,
      "gross_exchange": 59945,
      "directional_balance": 7733,
      "dominant_direction": "North Carolina to South Carolina",
      "main_flow": 33839,
      "reverse_flow": 26106,
      "reverse_share_of_main": 0.7715
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 26745,
      "a_to_b_moe_90": 4823,
      "b_to_a": 33011,
      "b_to_a_moe_90": 6618,
      "gross_exchange": 59756,
      "directional_balance": 6266,
      "dominant_direction": "Pennsylvania to Florida",
      "main_flow": 33011,
      "reverse_flow": 26745,
      "reverse_share_of_main": 0.8102
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 31489,
      "a_to_b_moe_90": 4584,
      "b_to_a": 25796,
      "b_to_a_moe_90": 5915,
      "gross_exchange": 57285,
      "directional_balance": 5693,
      "dominant_direction": "Florida to North Carolina",
      "main_flow": 31489,
      "reverse_flow": 25796,
      "reverse_share_of_main": 0.8192
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 30149,
      "a_to_b_moe_90": 4556,
      "b_to_a": 25609,
      "b_to_a_moe_90": 4245,
      "gross_exchange": 55758,
      "directional_balance": 4540,
      "dominant_direction": "California to New York",
      "main_flow": 30149,
      "reverse_flow": 25609,
      "reverse_share_of_main": 0.8494
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 31014,
      "a_to_b_moe_90": 5483,
      "b_to_a": 22364,
      "b_to_a_moe_90": 3994,
      "gross_exchange": 53378,
      "directional_balance": 8650,
      "dominant_direction": "New York to Pennsylvania",
      "main_flow": 31014,
      "reverse_flow": 22364,
      "reverse_share_of_main": 0.7211
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Florida",
      "state_b_fips": "12",
      "a_to_b": 37272,
      "a_to_b_moe_90": 6499,
      "b_to_a": 15268,
      "b_to_a_moe_90": 3050,
      "gross_exchange": 52540,
      "directional_balance": 22004,
      "dominant_direction": "California to Florida",
      "main_flow": 37272,
      "reverse_flow": 15268,
      "reverse_share_of_main": 0.4096
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 23562,
      "a_to_b_moe_90": 4435,
      "b_to_a": 28452,
      "b_to_a_moe_90": 6143,
      "gross_exchange": 52014,
      "directional_balance": 4890,
      "dominant_direction": "Virginia to Maryland",
      "main_flow": 28452,
      "reverse_flow": 23562,
      "reverse_share_of_main": 0.8281
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 24356,
      "a_to_b_moe_90": 5474,
      "b_to_a": 27337,
      "b_to_a_moe_90": 5011,
      "gross_exchange": 51693,
      "directional_balance": 2981,
      "dominant_direction": "Texas to Colorado",
      "main_flow": 27337,
      "reverse_flow": 24356,
      "reverse_share_of_main": 0.891
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 23651,
      "a_to_b_moe_90": 4299,
      "b_to_a": 27488,
      "b_to_a_moe_90": 6943,
      "gross_exchange": 51139,
      "directional_balance": 3837,
      "dominant_direction": "Virginia to Florida",
      "main_flow": 27488,
      "reverse_flow": 23651,
      "reverse_share_of_main": 0.8604
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 30239,
      "a_to_b_moe_90": 4949,
      "b_to_a": 19800,
      "b_to_a_moe_90": 4796,
      "gross_exchange": 50039,
      "directional_balance": 10439,
      "dominant_direction": "California to Oregon",
      "main_flow": 30239,
      "reverse_flow": 19800,
      "reverse_share_of_main": 0.6548
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 30723,
      "a_to_b_moe_90": 4537,
      "b_to_a": 18847,
      "b_to_a_moe_90": 3309,
      "gross_exchange": 49570,
      "directional_balance": 11876,
      "dominant_direction": "Oregon to Washington",
      "main_flow": 30723,
      "reverse_flow": 18847,
      "reverse_share_of_main": 0.6134
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 21137,
      "a_to_b_moe_90": 3912,
      "b_to_a": 27675,
      "b_to_a_moe_90": 5719,
      "gross_exchange": 48812,
      "directional_balance": 6538,
      "dominant_direction": "Virginia to North Carolina",
      "main_flow": 27675,
      "reverse_flow": 21137,
      "reverse_share_of_main": 0.7638
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 28803,
      "a_to_b_moe_90": 4972,
      "b_to_a": 17111,
      "b_to_a_moe_90": 4465,
      "gross_exchange": 45914,
      "directional_balance": 11692,
      "dominant_direction": "New York to Texas",
      "main_flow": 28803,
      "reverse_flow": 17111,
      "reverse_share_of_main": 0.5941
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 23540,
      "a_to_b_moe_90": 4720,
      "b_to_a": 18848,
      "b_to_a_moe_90": 3605,
      "gross_exchange": 42388,
      "directional_balance": 4692,
      "dominant_direction": "Florida to Ohio",
      "main_flow": 23540,
      "reverse_flow": 18848,
      "reverse_share_of_main": 0.8007
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 21719,
      "a_to_b_moe_90": 5670,
      "b_to_a": 20545,
      "b_to_a_moe_90": 3919,
      "gross_exchange": 42264,
      "directional_balance": 1174,
      "dominant_direction": "Louisiana to Texas",
      "main_flow": 21719,
      "reverse_flow": 20545,
      "reverse_share_of_main": 0.9459
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 18741,
      "a_to_b_moe_90": 3720,
      "b_to_a": 22859,
      "b_to_a_moe_90": 4469,
      "gross_exchange": 41600,
      "directional_balance": 4118,
      "dominant_direction": "Texas to Georgia",
      "main_flow": 22859,
      "reverse_flow": 18741,
      "reverse_share_of_main": 0.8199
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 22013,
      "a_to_b_moe_90": 7294,
      "b_to_a": 19254,
      "b_to_a_moe_90": 4906,
      "gross_exchange": 41267,
      "directional_balance": 2759,
      "dominant_direction": "Florida to Michigan",
      "main_flow": 22013,
      "reverse_flow": 19254,
      "reverse_share_of_main": 0.8747
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 23651,
      "a_to_b_moe_90": 5983,
      "b_to_a": 17393,
      "b_to_a_moe_90": 3974,
      "gross_exchange": 41044,
      "directional_balance": 6258,
      "dominant_direction": "Minnesota to Wisconsin",
      "main_flow": 23651,
      "reverse_flow": 17393,
      "reverse_share_of_main": 0.7354
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 16601,
      "a_to_b_moe_90": 3434,
      "b_to_a": 23398,
      "b_to_a_moe_90": 4040,
      "gross_exchange": 39999,
      "directional_balance": 6797,
      "dominant_direction": "Texas to Oklahoma",
      "main_flow": 23398,
      "reverse_flow": 16601,
      "reverse_share_of_main": 0.7095
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 16083,
      "a_to_b_moe_90": 3606,
      "b_to_a": 23498,
      "b_to_a_moe_90": 4018,
      "gross_exchange": 39581,
      "directional_balance": 7415,
      "dominant_direction": "New York to Connecticut",
      "main_flow": 23498,
      "reverse_flow": 16083,
      "reverse_share_of_main": 0.6844
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 18698,
      "a_to_b_moe_90": 3648,
      "b_to_a": 20698,
      "b_to_a_moe_90": 3998,
      "gross_exchange": 39396,
      "directional_balance": 2000,
      "dominant_direction": "Missouri to Kansas",
      "main_flow": 20698,
      "reverse_flow": 18698,
      "reverse_share_of_main": 0.9034
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 24854,
      "a_to_b_moe_90": 5080,
      "b_to_a": 14206,
      "b_to_a_moe_90": 3202,
      "gross_exchange": 39060,
      "directional_balance": 10648,
      "dominant_direction": "Illinois to Indiana",
      "main_flow": 24854,
      "reverse_flow": 14206,
      "reverse_share_of_main": 0.5716
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 22986,
      "a_to_b_moe_90": 4633,
      "b_to_a": 15416,
      "b_to_a_moe_90": 4114,
      "gross_exchange": 38402,
      "directional_balance": 7570,
      "dominant_direction": "Illinois to Texas",
      "main_flow": 22986,
      "reverse_flow": 15416,
      "reverse_share_of_main": 0.6707
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 23538,
      "a_to_b_moe_90": 4675,
      "b_to_a": 13825,
      "b_to_a_moe_90": 3393,
      "gross_exchange": 37363,
      "directional_balance": 9713,
      "dominant_direction": "Illinois to Wisconsin",
      "main_flow": 23538,
      "reverse_flow": 13825,
      "reverse_share_of_main": 0.5873
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 19089,
      "a_to_b_moe_90": 3407,
      "b_to_a": 18098,
      "b_to_a_moe_90": 3268,
      "gross_exchange": 37187,
      "directional_balance": 991,
      "dominant_direction": "Massachusetts to New York",
      "main_flow": 19089,
      "reverse_flow": 18098,
      "reverse_share_of_main": 0.9481
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 11701,
      "a_to_b_moe_90": 2572,
      "b_to_a": 25005,
      "b_to_a_moe_90": 4618,
      "gross_exchange": 36706,
      "directional_balance": 13304,
      "dominant_direction": "Illinois to Florida",
      "main_flow": 25005,
      "reverse_flow": 11701,
      "reverse_share_of_main": 0.4679
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 19915,
      "a_to_b_moe_90": 3820,
      "b_to_a": 16630,
      "b_to_a_moe_90": 4849,
      "gross_exchange": 36545,
      "directional_balance": 3285,
      "dominant_direction": "Florida to Tennessee",
      "main_flow": 19915,
      "reverse_flow": 16630,
      "reverse_share_of_main": 0.835
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 17288,
      "a_to_b_moe_90": 4736,
      "b_to_a": 19016,
      "b_to_a_moe_90": 5309,
      "gross_exchange": 36304,
      "directional_balance": 1728,
      "dominant_direction": "Virginia to Texas",
      "main_flow": 19016,
      "reverse_flow": 17288,
      "reverse_share_of_main": 0.9091
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 19332,
      "a_to_b_moe_90": 5071,
      "b_to_a": 16371,
      "b_to_a_moe_90": 4804,
      "gross_exchange": 35703,
      "directional_balance": 2961,
      "dominant_direction": "California to Virginia",
      "main_flow": 19332,
      "reverse_flow": 16371,
      "reverse_share_of_main": 0.8468
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 12876,
      "a_to_b_moe_90": 3662,
      "b_to_a": 22423,
      "b_to_a_moe_90": 4271,
      "gross_exchange": 35299,
      "directional_balance": 9547,
      "dominant_direction": "New Jersey to Florida",
      "main_flow": 22423,
      "reverse_flow": 12876,
      "reverse_share_of_main": 0.5742
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Colorado",
      "state_b_fips": "08",
      "a_to_b": 19757,
      "a_to_b_moe_90": 3776,
      "b_to_a": 15105,
      "b_to_a_moe_90": 3625,
      "gross_exchange": 34862,
      "directional_balance": 4652,
      "dominant_direction": "California to Colorado",
      "main_flow": 19757,
      "reverse_flow": 15105,
      "reverse_share_of_main": 0.7645
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 19739,
      "a_to_b_moe_90": 4700,
      "b_to_a": 15089,
      "b_to_a_moe_90": 3175,
      "gross_exchange": 34828,
      "directional_balance": 4650,
      "dominant_direction": "Georgia to North Carolina",
      "main_flow": 19739,
      "reverse_flow": 15089,
      "reverse_share_of_main": 0.7644
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Illinois",
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      "a_to_b_moe_90": 3373,
      "b_to_a": 18852,
      "b_to_a_moe_90": 5671,
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      "directional_balance": 3384,
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      "main_flow": 18852,
      "reverse_flow": 15468,
      "reverse_share_of_main": 0.8205
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
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      "a_to_b_moe_90": 3637,
      "b_to_a": 17151,
      "b_to_a_moe_90": 4572,
      "gross_exchange": 33733,
      "directional_balance": 569,
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      "reverse_flow": 16582,
      "reverse_share_of_main": 0.9668
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 15165,
      "a_to_b_moe_90": 4174,
      "b_to_a": 16454,
      "b_to_a_moe_90": 4067,
      "gross_exchange": 31619,
      "directional_balance": 1289,
      "dominant_direction": "Texas to North Carolina",
      "main_flow": 16454,
      "reverse_flow": 15165,
      "reverse_share_of_main": 0.9217
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
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      "state_b_fips": "42",
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      "a_to_b_moe_90": 5184,
      "b_to_a": 12665,
      "b_to_a_moe_90": 2639,
      "gross_exchange": 30626,
      "directional_balance": 5296,
      "dominant_direction": "Maryland to Pennsylvania",
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      "reverse_flow": 12665,
      "reverse_share_of_main": 0.7051
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Massachusetts",
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      "a_to_b": 8435,
      "a_to_b_moe_90": 2456,
      "b_to_a": 21344,
      "b_to_a_moe_90": 4639,
      "gross_exchange": 29779,
      "directional_balance": 12909,
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      "main_flow": 21344,
      "reverse_flow": 8435,
      "reverse_share_of_main": 0.3952
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "Washington",
      "state_b_fips": "53",
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      "a_to_b_moe_90": 3300,
      "b_to_a": 16449,
      "b_to_a_moe_90": 4036,
      "gross_exchange": 29651,
      "directional_balance": 3247,
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      "main_flow": 16449,
      "reverse_flow": 13202,
      "reverse_share_of_main": 0.8026
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "New Hampshire",
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      "a_to_b_moe_90": 3097,
      "b_to_a": 12135,
      "b_to_a_moe_90": 3164,
      "gross_exchange": 29079,
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      "main_flow": 16944,
      "reverse_flow": 12135,
      "reverse_share_of_main": 0.7162
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Ohio",
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      "a_to_b_moe_90": 3332,
      "b_to_a": 15405,
      "b_to_a_moe_90": 4741,
      "gross_exchange": 28960,
      "directional_balance": 1850,
      "dominant_direction": "Ohio to Michigan",
      "main_flow": 15405,
      "reverse_flow": 13555,
      "reverse_share_of_main": 0.8799
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 18224,
      "a_to_b_moe_90": 2863,
      "b_to_a": 10305,
      "b_to_a_moe_90": 2734,
      "gross_exchange": 28529,
      "directional_balance": 7919,
      "dominant_direction": "Illinois to Missouri",
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      "reverse_flow": 10305,
      "reverse_share_of_main": 0.5655
    },
    {
      "state_a": "Florida",
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      "state_b_fips": "24",
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      "a_to_b_moe_90": 2500,
      "b_to_a": 17905,
      "b_to_a_moe_90": 3890,
      "gross_exchange": 28157,
      "directional_balance": 7653,
      "dominant_direction": "Maryland to Florida",
      "main_flow": 17905,
      "reverse_flow": 10252,
      "reverse_share_of_main": 0.5726
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 19766,
      "a_to_b_moe_90": 4993,
      "b_to_a": 8355,
      "b_to_a_moe_90": 4161,
      "gross_exchange": 28121,
      "directional_balance": 11411,
      "dominant_direction": "California to Tennessee",
      "main_flow": 19766,
      "reverse_flow": 8355,
      "reverse_share_of_main": 0.4227
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
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      "a_to_b": 9780,
      "a_to_b_moe_90": 3129,
      "b_to_a": 18324,
      "b_to_a_moe_90": 3543,
      "gross_exchange": 28104,
      "directional_balance": 8544,
      "dominant_direction": "Washington to Arizona",
      "main_flow": 18324,
      "reverse_flow": 9780,
      "reverse_share_of_main": 0.5337
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
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      "state_b_fips": "12",
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      "a_to_b_moe_90": 3351,
      "b_to_a": 16508,
      "b_to_a_moe_90": 5021,
      "gross_exchange": 27961,
      "directional_balance": 5055,
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      "main_flow": 16508,
      "reverse_flow": 11453,
      "reverse_share_of_main": 0.6938
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
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      "state_b_fips": "13",
      "a_to_b": 14272,
      "a_to_b_moe_90": 5399,
      "b_to_a": 13602,
      "b_to_a_moe_90": 2895,
      "gross_exchange": 27874,
      "directional_balance": 670,
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      "main_flow": 14272,
      "reverse_flow": 13602,
      "reverse_share_of_main": 0.9531
    },
    {
      "state_a": "California",
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      "a_to_b_moe_90": 2865,
      "b_to_a": 14492,
      "b_to_a_moe_90": 3821,
      "gross_exchange": 27551,
      "directional_balance": 1433,
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      "main_flow": 14492,
      "reverse_flow": 13059,
      "reverse_share_of_main": 0.9011
    },
    {
      "state_a": "Missouri",
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      "state_b_fips": "48",
      "a_to_b": 13923,
      "a_to_b_moe_90": 4646,
      "b_to_a": 13008,
      "b_to_a_moe_90": 3527,
      "gross_exchange": 26931,
      "directional_balance": 915,
      "dominant_direction": "Missouri to Texas",
      "main_flow": 13923,
      "reverse_flow": 13008,
      "reverse_share_of_main": 0.9343
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Virginia",
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      "a_to_b": 15725,
      "a_to_b_moe_90": 4317,
      "b_to_a": 11100,
      "b_to_a_moe_90": 2789,
      "gross_exchange": 26825,
      "directional_balance": 4625,
      "dominant_direction": "New York to Virginia",
      "main_flow": 15725,
      "reverse_flow": 11100,
      "reverse_share_of_main": 0.7059
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
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      "a_to_b": 16198,
      "a_to_b_moe_90": 3428,
      "b_to_a": 10625,
      "b_to_a_moe_90": 2286,
      "gross_exchange": 26823,
      "directional_balance": 5573,
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      "main_flow": 16198,
      "reverse_flow": 10625,
      "reverse_share_of_main": 0.6559
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Rhode Island",
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      "a_to_b_moe_90": 3283,
      "b_to_a": 15288,
      "b_to_a_moe_90": 4386,
      "gross_exchange": 26265,
      "directional_balance": 4311,
      "dominant_direction": "Rhode Island to Massachusetts",
      "main_flow": 15288,
      "reverse_flow": 10977,
      "reverse_share_of_main": 0.718
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
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      "state_b_fips": "37",
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      "a_to_b_moe_90": 4449,
      "b_to_a": 8618,
      "b_to_a_moe_90": 2553,
      "gross_exchange": 26067,
      "directional_balance": 8831,
      "dominant_direction": "California to North Carolina",
      "main_flow": 17449,
      "reverse_flow": 8618,
      "reverse_share_of_main": 0.4939
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
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      "state_b_fips": "39",
      "a_to_b": 13771,
      "a_to_b_moe_90": 3732,
      "b_to_a": 12121,
      "b_to_a_moe_90": 3944,
      "gross_exchange": 25892,
      "directional_balance": 1650,
      "dominant_direction": "Kentucky to Ohio",
      "main_flow": 13771,
      "reverse_flow": 12121,
      "reverse_share_of_main": 0.8802
    },
    {
      "state_a": "Florida",
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      "a_to_b": 17320,
      "a_to_b_moe_90": 4284,
      "b_to_a": 8512,
      "b_to_a_moe_90": 2235,
      "gross_exchange": 25832,
      "directional_balance": 8808,
      "dominant_direction": "Florida to South Carolina",
      "main_flow": 17320,
      "reverse_flow": 8512,
      "reverse_share_of_main": 0.4915
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
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      "state_b_fips": "53",
      "a_to_b": 8421,
      "a_to_b_moe_90": 2225,
      "b_to_a": 17404,
      "b_to_a_moe_90": 4128,
      "gross_exchange": 25825,
      "directional_balance": 8983,
      "dominant_direction": "Washington to Idaho",
      "main_flow": 17404,
      "reverse_flow": 8421,
      "reverse_share_of_main": 0.4839
    },
    {
      "state_a": "New York",
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      "state_b_fips": "45",
      "a_to_b": 19305,
      "a_to_b_moe_90": 5548,
      "b_to_a": 6475,
      "b_to_a_moe_90": 2000,
      "gross_exchange": 25780,
      "directional_balance": 12830,
      "dominant_direction": "New York to South Carolina",
      "main_flow": 19305,
      "reverse_flow": 6475,
      "reverse_share_of_main": 0.3354
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 16744,
      "a_to_b_moe_90": 4399,
      "b_to_a": 8440,
      "b_to_a_moe_90": 3295,
      "gross_exchange": 25184,
      "directional_balance": 8304,
      "dominant_direction": "Pennsylvania to Virginia",
      "main_flow": 16744,
      "reverse_flow": 8440,
      "reverse_share_of_main": 0.5041
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 11317,
      "a_to_b_moe_90": 2891,
      "b_to_a": 13773,
      "b_to_a_moe_90": 3332,
      "gross_exchange": 25090,
      "directional_balance": 2456,
      "dominant_direction": "Texas to New Mexico",
      "main_flow": 13773,
      "reverse_flow": 11317,
      "reverse_share_of_main": 0.8217
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
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      "state_b_fips": "24",
      "a_to_b": 17309,
      "a_to_b_moe_90": 3993,
      "b_to_a": 7563,
      "b_to_a_moe_90": 1666,
      "gross_exchange": 24872,
      "directional_balance": 9746,
      "dominant_direction": "District of Columbia to Maryland",
      "main_flow": 17309,
      "reverse_flow": 7563,
      "reverse_share_of_main": 0.4369
    },
    {
      "state_a": "Illinois",
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      "state_b_fips": "26",
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      "a_to_b_moe_90": 3802,
      "b_to_a": 10508,
      "b_to_a_moe_90": 3436,
      "gross_exchange": 24088,
      "directional_balance": 3072,
      "dominant_direction": "Illinois to Michigan",
      "main_flow": 13580,
      "reverse_flow": 10508,
      "reverse_share_of_main": 0.7738
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
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      "state_b_fips": "48",
      "a_to_b": 13613,
      "a_to_b_moe_90": 3737,
      "b_to_a": 10361,
      "b_to_a_moe_90": 2550,
      "gross_exchange": 23974,
      "directional_balance": 3252,
      "dominant_direction": "Arizona to Texas",
      "main_flow": 13613,
      "reverse_flow": 10361,
      "reverse_share_of_main": 0.7611
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 17153,
      "a_to_b_moe_90": 3285,
      "b_to_a": 6064,
      "b_to_a_moe_90": 1843,
      "gross_exchange": 23217,
      "directional_balance": 11089,
      "dominant_direction": "California to Idaho",
      "main_flow": 17153,
      "reverse_flow": 6064,
      "reverse_share_of_main": 0.3535
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
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      "state_b_fips": "18",
      "a_to_b": 7916,
      "a_to_b_moe_90": 2599,
      "b_to_a": 15256,
      "b_to_a_moe_90": 3721,
      "gross_exchange": 23172,
      "directional_balance": 7340,
      "dominant_direction": "Indiana to Florida",
      "main_flow": 15256,
      "reverse_flow": 7916,
      "reverse_share_of_main": 0.5189
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
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      "state_b_fips": "12",
      "a_to_b": 10215,
      "a_to_b_moe_90": 2275,
      "b_to_a": 12497,
      "b_to_a_moe_90": 4340,
      "gross_exchange": 22712,
      "directional_balance": 2282,
      "dominant_direction": "Florida to Colorado",
      "main_flow": 12497,
      "reverse_flow": 10215,
      "reverse_share_of_main": 0.8174
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
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      "state_b_fips": "42",
      "a_to_b": 11073,
      "a_to_b_moe_90": 4676,
      "b_to_a": 11227,
      "b_to_a_moe_90": 2713,
      "gross_exchange": 22300,
      "directional_balance": 154,
      "dominant_direction": "Pennsylvania to Ohio",
      "main_flow": 11227,
      "reverse_flow": 11073,
      "reverse_share_of_main": 0.9863
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 8606,
      "a_to_b_moe_90": 2842,
      "b_to_a": 13277,
      "b_to_a_moe_90": 4269,
      "gross_exchange": 21883,
      "directional_balance": 4671,
      "dominant_direction": "New York to Maryland",
      "main_flow": 13277,
      "reverse_flow": 8606,
      "reverse_share_of_main": 0.6482
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 16238,
      "a_to_b_moe_90": 5824,
      "b_to_a": 5610,
      "b_to_a_moe_90": 2034,
      "gross_exchange": 21848,
      "directional_balance": 10628,
      "dominant_direction": "California to Michigan",
      "main_flow": 16238,
      "reverse_flow": 5610,
      "reverse_share_of_main": 0.3455
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 13537,
      "a_to_b_moe_90": 3282,
      "b_to_a": 7828,
      "b_to_a_moe_90": 2130,
      "gross_exchange": 21365,
      "directional_balance": 5709,
      "dominant_direction": "California to Pennsylvania",
      "main_flow": 13537,
      "reverse_flow": 7828,
      "reverse_share_of_main": 0.5783
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
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      "state_b_fips": "39",
      "a_to_b": 11010,
      "a_to_b_moe_90": 2769,
      "b_to_a": 10302,
      "b_to_a_moe_90": 2797,
      "gross_exchange": 21312,
      "directional_balance": 708,
      "dominant_direction": "Indiana to Ohio",
      "main_flow": 11010,
      "reverse_flow": 10302,
      "reverse_share_of_main": 0.9357
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 10202,
      "a_to_b_moe_90": 2383,
      "b_to_a": 10844,
      "b_to_a_moe_90": 2990,
      "gross_exchange": 21046,
      "directional_balance": 642,
      "dominant_direction": "Tennessee to Alabama",
      "main_flow": 10844,
      "reverse_flow": 10202,
      "reverse_share_of_main": 0.9408
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 6974,
      "a_to_b_moe_90": 2079,
      "b_to_a": 13822,
      "b_to_a_moe_90": 3908,
      "gross_exchange": 20796,
      "directional_balance": 6848,
      "dominant_direction": "Pennsylvania to North Carolina",
      "main_flow": 13822,
      "reverse_flow": 6974,
      "reverse_share_of_main": 0.5046
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 9516,
      "a_to_b_moe_90": 2023,
      "b_to_a": 11162,
      "b_to_a_moe_90": 2619,
      "gross_exchange": 20678,
      "directional_balance": 1646,
      "dominant_direction": "Massachusetts to Connecticut",
      "main_flow": 11162,
      "reverse_flow": 9516,
      "reverse_share_of_main": 0.8525
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Colorado",
      "state_b_fips": "08",
      "a_to_b": 10316,
      "a_to_b_moe_90": 2952,
      "b_to_a": 10295,
      "b_to_a_moe_90": 2701,
      "gross_exchange": 20611,
      "directional_balance": 21,
      "dominant_direction": "Arizona to Colorado",
      "main_flow": 10316,
      "reverse_flow": 10295,
      "reverse_share_of_main": 0.998
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Texas",
      "state_b_fips": "48",
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      "b_to_a_moe_90": 2643,
      "gross_exchange": 20463,
      "directional_balance": 5581,
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      "reverse_flow": 7441,
      "reverse_share_of_main": 0.5714
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Tennessee",
      "state_b_fips": "47",
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      "a_to_b_moe_90": 1973,
      "b_to_a": 13286,
      "b_to_a_moe_90": 4874,
      "gross_exchange": 20455,
      "directional_balance": 6117,
      "dominant_direction": "Tennessee to Kentucky",
      "main_flow": 13286,
      "reverse_flow": 7169,
      "reverse_share_of_main": 0.5396
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Georgia",
      "state_b_fips": "13",
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      "a_to_b_moe_90": 4230,
      "b_to_a": 5944,
      "b_to_a_moe_90": 2227,
      "gross_exchange": 20446,
      "directional_balance": 8558,
      "dominant_direction": "California to Georgia",
      "main_flow": 14502,
      "reverse_flow": 5944,
      "reverse_share_of_main": 0.4099
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
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      "state_b_fips": "48",
      "a_to_b": 8494,
      "a_to_b_moe_90": 3065,
      "b_to_a": 11864,
      "b_to_a_moe_90": 2768,
      "gross_exchange": 20358,
      "directional_balance": 3370,
      "dominant_direction": "Texas to Arkansas",
      "main_flow": 11864,
      "reverse_flow": 8494,
      "reverse_share_of_main": 0.7159
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "New York",
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      "a_to_b_moe_90": 2455,
      "b_to_a": 12236,
      "b_to_a_moe_90": 3327,
      "gross_exchange": 20220,
      "directional_balance": 4252,
      "dominant_direction": "New York to Georgia",
      "main_flow": 12236,
      "reverse_flow": 7984,
      "reverse_share_of_main": 0.6525
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 11493,
      "a_to_b_moe_90": 3601,
      "b_to_a": 8716,
      "b_to_a_moe_90": 2190,
      "gross_exchange": 20209,
      "directional_balance": 2777,
      "dominant_direction": "California to Maryland",
      "main_flow": 11493,
      "reverse_flow": 8716,
      "reverse_share_of_main": 0.7584
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
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      "state_b_fips": "49",
      "a_to_b": 12302,
      "a_to_b_moe_90": 3360,
      "b_to_a": 7747,
      "b_to_a_moe_90": 2067,
      "gross_exchange": 20049,
      "directional_balance": 4555,
      "dominant_direction": "California to Utah",
      "main_flow": 12302,
      "reverse_flow": 7747,
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    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
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      "state_b_fips": "48",
      "a_to_b": 13147,
      "a_to_b_moe_90": 3740,
      "b_to_a": 6889,
      "b_to_a_moe_90": 2261,
      "gross_exchange": 20036,
      "directional_balance": 6258,
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      "reverse_flow": 6889,
      "reverse_share_of_main": 0.524
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    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Tennessee",
      "state_b_fips": "47",
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      "a_to_b_moe_90": 2491,
      "b_to_a": 10110,
      "b_to_a_moe_90": 2874,
      "gross_exchange": 19923,
      "directional_balance": 297,
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      "main_flow": 10110,
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      "reverse_share_of_main": 0.9706
    },
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      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 9097,
      "a_to_b_moe_90": 3522,
      "b_to_a": 10740,
      "b_to_a_moe_90": 3730,
      "gross_exchange": 19837,
      "directional_balance": 1643,
      "dominant_direction": "Washington to Florida",
      "main_flow": 10740,
      "reverse_flow": 9097,
      "reverse_share_of_main": 0.847
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Texas",
      "state_b_fips": "48",
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      "a_to_b_moe_90": 2916,
      "b_to_a": 10029,
      "b_to_a_moe_90": 3312,
      "gross_exchange": 19683,
      "directional_balance": 375,
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      "main_flow": 10029,
      "reverse_flow": 9654,
      "reverse_share_of_main": 0.9626
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      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 8886,
      "a_to_b_moe_90": 2357,
      "b_to_a": 10406,
      "b_to_a_moe_90": 4008,
      "gross_exchange": 19292,
      "directional_balance": 1520,
      "dominant_direction": "New York to Illinois",
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      "reverse_flow": 8886,
      "reverse_share_of_main": 0.8539
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
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      "state_b_fips": "48",
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      "a_to_b_moe_90": 2550,
      "b_to_a": 11494,
      "b_to_a_moe_90": 2883,
      "gross_exchange": 19077,
      "directional_balance": 3911,
      "dominant_direction": "Texas to Tennessee",
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      "reverse_flow": 7583,
      "reverse_share_of_main": 0.6597
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
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      "state_b_fips": "48",
      "a_to_b": 10527,
      "a_to_b_moe_90": 4435,
      "b_to_a": 8549,
      "b_to_a_moe_90": 2889,
      "gross_exchange": 19076,
      "directional_balance": 1978,
      "dominant_direction": "Mississippi to Texas",
      "main_flow": 10527,
      "reverse_flow": 8549,
      "reverse_share_of_main": 0.8121
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 8919,
      "a_to_b_moe_90": 2435,
      "b_to_a": 10095,
      "b_to_a_moe_90": 3057,
      "gross_exchange": 19014,
      "directional_balance": 1176,
      "dominant_direction": "Hawaii to California",
      "main_flow": 10095,
      "reverse_flow": 8919,
      "reverse_share_of_main": 0.8835
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
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      "state_b_fips": "47",
      "a_to_b": 11420,
      "a_to_b_moe_90": 3685,
      "b_to_a": 7332,
      "b_to_a_moe_90": 2461,
      "gross_exchange": 18752,
      "directional_balance": 4088,
      "dominant_direction": "North Carolina to Tennessee",
      "main_flow": 11420,
      "reverse_flow": 7332,
      "reverse_share_of_main": 0.642
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 11016,
      "a_to_b_moe_90": 2800,
      "b_to_a": 7485,
      "b_to_a_moe_90": 2210,
      "gross_exchange": 18501,
      "directional_balance": 3531,
      "dominant_direction": "South Carolina to Virginia",
      "main_flow": 11016,
      "reverse_flow": 7485,
      "reverse_share_of_main": 0.6795
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
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      "state_b_fips": "48",
      "a_to_b": 10263,
      "a_to_b_moe_90": 3905,
      "b_to_a": 7741,
      "b_to_a_moe_90": 2778,
      "gross_exchange": 18004,
      "directional_balance": 2522,
      "dominant_direction": "Kansas to Texas",
      "main_flow": 10263,
      "reverse_flow": 7741,
      "reverse_share_of_main": 0.7543
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Utah",
      "state_b_fips": "49",
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      "a_to_b_moe_90": 3295,
      "b_to_a": 7743,
      "b_to_a_moe_90": 2801,
      "gross_exchange": 17992,
      "directional_balance": 2506,
      "dominant_direction": "Arizona to Utah",
      "main_flow": 10249,
      "reverse_flow": 7743,
      "reverse_share_of_main": 0.7555
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Kentucky",
      "state_b_fips": "21",
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      "a_to_b_moe_90": 2006,
      "b_to_a": 10215,
      "b_to_a_moe_90": 2435,
      "gross_exchange": 17871,
      "directional_balance": 2559,
      "dominant_direction": "Kentucky to Indiana",
      "main_flow": 10215,
      "reverse_flow": 7656,
      "reverse_share_of_main": 0.7495
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 8336,
      "a_to_b_moe_90": 3001,
      "b_to_a": 9331,
      "b_to_a_moe_90": 2814,
      "gross_exchange": 17667,
      "directional_balance": 995,
      "dominant_direction": "New Jersey to California",
      "main_flow": 9331,
      "reverse_flow": 8336,
      "reverse_share_of_main": 0.8934
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 7583,
      "a_to_b_moe_90": 2136,
      "b_to_a": 9883,
      "b_to_a_moe_90": 3926,
      "gross_exchange": 17466,
      "directional_balance": 2300,
      "dominant_direction": "Virginia to Georgia",
      "main_flow": 9883,
      "reverse_flow": 7583,
      "reverse_share_of_main": 0.7673
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 9411,
      "a_to_b_moe_90": 1933,
      "b_to_a": 7557,
      "b_to_a_moe_90": 2368,
      "gross_exchange": 16968,
      "directional_balance": 1854,
      "dominant_direction": "District of Columbia to Virginia",
      "main_flow": 9411,
      "reverse_flow": 7557,
      "reverse_share_of_main": 0.803
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    {
      "state_a": "Illinois",
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      "state_b_fips": "39",
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      "a_to_b_moe_90": 2406,
      "b_to_a": 7588,
      "b_to_a_moe_90": 2415,
      "gross_exchange": 16958,
      "directional_balance": 1782,
      "dominant_direction": "Illinois to Ohio",
      "main_flow": 9370,
      "reverse_flow": 7588,
      "reverse_share_of_main": 0.8098
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    {
      "state_a": "Arizona",
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      "a_to_b": 7053,
      "a_to_b_moe_90": 2263,
      "b_to_a": 9656,
      "b_to_a_moe_90": 2533,
      "gross_exchange": 16709,
      "directional_balance": 2603,
      "dominant_direction": "Illinois to Arizona",
      "main_flow": 9656,
      "reverse_flow": 7053,
      "reverse_share_of_main": 0.7304
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
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      "state_b_fips": "12",
      "a_to_b": 9386,
      "a_to_b_moe_90": 2598,
      "b_to_a": 7222,
      "b_to_a_moe_90": 2997,
      "gross_exchange": 16608,
      "directional_balance": 2164,
      "dominant_direction": "Arizona to Florida",
      "main_flow": 9386,
      "reverse_flow": 7222,
      "reverse_share_of_main": 0.7694
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 9034,
      "a_to_b_moe_90": 2599,
      "b_to_a": 7426,
      "b_to_a_moe_90": 4200,
      "gross_exchange": 16460,
      "directional_balance": 1608,
      "dominant_direction": "California to Indiana",
      "main_flow": 9034,
      "reverse_flow": 7426,
      "reverse_share_of_main": 0.822
    },
    {
      "state_a": "Florida",
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      "state_b": "Kentucky",
      "state_b_fips": "21",
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      "a_to_b_moe_90": 2339,
      "b_to_a": 9309,
      "b_to_a_moe_90": 3391,
      "gross_exchange": 16324,
      "directional_balance": 2294,
      "dominant_direction": "Kentucky to Florida",
      "main_flow": 9309,
      "reverse_flow": 7015,
      "reverse_share_of_main": 0.7536
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 7767,
      "a_to_b_moe_90": 3286,
      "b_to_a": 8346,
      "b_to_a_moe_90": 3277,
      "gross_exchange": 16113,
      "directional_balance": 579,
      "dominant_direction": "Texas to South Carolina",
      "main_flow": 8346,
      "reverse_flow": 7767,
      "reverse_share_of_main": 0.9306
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 9507,
      "a_to_b_moe_90": 2466,
      "b_to_a": 6393,
      "b_to_a_moe_90": 1873,
      "gross_exchange": 15900,
      "directional_balance": 3114,
      "dominant_direction": "Illinois to Iowa",
      "main_flow": 9507,
      "reverse_flow": 6393,
      "reverse_share_of_main": 0.6725
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
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      "state_b_fips": "45",
      "a_to_b": 8926,
      "a_to_b_moe_90": 2700,
      "b_to_a": 6913,
      "b_to_a_moe_90": 2229,
      "gross_exchange": 15839,
      "directional_balance": 2013,
      "dominant_direction": "California to South Carolina",
      "main_flow": 8926,
      "reverse_flow": 6913,
      "reverse_share_of_main": 0.7745
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
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      "state_b_fips": "37",
      "a_to_b": 9085,
      "a_to_b_moe_90": 2700,
      "b_to_a": 6722,
      "b_to_a_moe_90": 2499,
      "gross_exchange": 15807,
      "directional_balance": 2363,
      "dominant_direction": "Maryland to North Carolina",
      "main_flow": 9085,
      "reverse_flow": 6722,
      "reverse_share_of_main": 0.7399
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 7033,
      "a_to_b_moe_90": 1998,
      "b_to_a": 8748,
      "b_to_a_moe_90": 2699,
      "gross_exchange": 15781,
      "directional_balance": 1715,
      "dominant_direction": "Missouri to Florida",
      "main_flow": 8748,
      "reverse_flow": 7033,
      "reverse_share_of_main": 0.804
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 6426,
      "a_to_b_moe_90": 2618,
      "b_to_a": 9351,
      "b_to_a_moe_90": 3274,
      "gross_exchange": 15777,
      "directional_balance": 2925,
      "dominant_direction": "Nevada to Florida",
      "main_flow": 9351,
      "reverse_flow": 6426,
      "reverse_share_of_main": 0.6872
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 9374,
      "a_to_b_moe_90": 2534,
      "b_to_a": 6369,
      "b_to_a_moe_90": 1783,
      "gross_exchange": 15743,
      "directional_balance": 3005,
      "dominant_direction": "Indiana to Michigan",
      "main_flow": 9374,
      "reverse_flow": 6369,
      "reverse_share_of_main": 0.6794
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
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      "state_b_fips": "53",
      "a_to_b": 9573,
      "a_to_b_moe_90": 2732,
      "b_to_a": 6098,
      "b_to_a_moe_90": 1950,
      "gross_exchange": 15671,
      "directional_balance": 3475,
      "dominant_direction": "Colorado to Washington",
      "main_flow": 9573,
      "reverse_flow": 6098,
      "reverse_share_of_main": 0.637
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 10239,
      "a_to_b_moe_90": 3141,
      "b_to_a": 5285,
      "b_to_a_moe_90": 2114,
      "gross_exchange": 15524,
      "directional_balance": 4954,
      "dominant_direction": "Massachusetts to Texas",
      "main_flow": 10239,
      "reverse_flow": 5285,
      "reverse_share_of_main": 0.5162
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 5556,
      "a_to_b_moe_90": 1790,
      "b_to_a": 9929,
      "b_to_a_moe_90": 6205,
      "gross_exchange": 15485,
      "directional_balance": 4373,
      "dominant_direction": "North Carolina to Arizona",
      "main_flow": 9929,
      "reverse_flow": 5556,
      "reverse_share_of_main": 0.5596
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 9136,
      "a_to_b_moe_90": 3257,
      "b_to_a": 6287,
      "b_to_a_moe_90": 2304,
      "gross_exchange": 15423,
      "directional_balance": 2849,
      "dominant_direction": "Alabama to Mississippi",
      "main_flow": 9136,
      "reverse_flow": 6287,
      "reverse_share_of_main": 0.6882
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Florida",
      "state_b_fips": "12",
      "a_to_b": 9178,
      "a_to_b_moe_90": 2643,
      "b_to_a": 6132,
      "b_to_a_moe_90": 2211,
      "gross_exchange": 15310,
      "directional_balance": 3046,
      "dominant_direction": "Connecticut to Florida",
      "main_flow": 9178,
      "reverse_flow": 6132,
      "reverse_share_of_main": 0.6681
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 6433,
      "a_to_b_moe_90": 2941,
      "b_to_a": 8648,
      "b_to_a_moe_90": 2906,
      "gross_exchange": 15081,
      "directional_balance": 2215,
      "dominant_direction": "Texas to Michigan",
      "main_flow": 8648,
      "reverse_flow": 6433,
      "reverse_share_of_main": 0.7439
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 6330,
      "a_to_b_moe_90": 2640,
      "b_to_a": 8645,
      "b_to_a_moe_90": 3035,
      "gross_exchange": 14975,
      "directional_balance": 2315,
      "dominant_direction": "Minnesota to Florida",
      "main_flow": 8645,
      "reverse_flow": 6330,
      "reverse_share_of_main": 0.7322
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 6868,
      "a_to_b_moe_90": 1958,
      "b_to_a": 7949,
      "b_to_a_moe_90": 2754,
      "gross_exchange": 14817,
      "directional_balance": 1081,
      "dominant_direction": "Texas to Alabama",
      "main_flow": 7949,
      "reverse_flow": 6868,
      "reverse_share_of_main": 0.864
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 6604,
      "a_to_b_moe_90": 3189,
      "b_to_a": 7991,
      "b_to_a_moe_90": 2680,
      "gross_exchange": 14595,
      "directional_balance": 1387,
      "dominant_direction": "Pennsylvania to Georgia",
      "main_flow": 7991,
      "reverse_flow": 6604,
      "reverse_share_of_main": 0.8264
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 11569,
      "a_to_b_moe_90": 3016,
      "b_to_a": 2944,
      "b_to_a_moe_90": 1321,
      "gross_exchange": 14513,
      "directional_balance": 8625,
      "dominant_direction": "New Jersey to Virginia",
      "main_flow": 11569,
      "reverse_flow": 2944,
      "reverse_share_of_main": 0.2545
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 8116,
      "a_to_b_moe_90": 2832,
      "b_to_a": 6303,
      "b_to_a_moe_90": 2747,
      "gross_exchange": 14419,
      "directional_balance": 1813,
      "dominant_direction": "Texas to Wisconsin",
      "main_flow": 8116,
      "reverse_flow": 6303,
      "reverse_share_of_main": 0.7766
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 7787,
      "a_to_b_moe_90": 2358,
      "b_to_a": 6517,
      "b_to_a_moe_90": 2784,
      "gross_exchange": 14304,
      "directional_balance": 1270,
      "dominant_direction": "California to Ohio",
      "main_flow": 7787,
      "reverse_flow": 6517,
      "reverse_share_of_main": 0.8369
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 6362,
      "a_to_b_moe_90": 2145,
      "b_to_a": 7909,
      "b_to_a_moe_90": 3896,
      "gross_exchange": 14271,
      "directional_balance": 1547,
      "dominant_direction": "Texas to Nevada",
      "main_flow": 7909,
      "reverse_flow": 6362,
      "reverse_share_of_main": 0.8044
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 8244,
      "a_to_b_moe_90": 2043,
      "b_to_a": 5942,
      "b_to_a_moe_90": 1969,
      "gross_exchange": 14186,
      "directional_balance": 2302,
      "dominant_direction": "Minnesota to North Dakota",
      "main_flow": 8244,
      "reverse_flow": 5942,
      "reverse_share_of_main": 0.7208
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 7185,
      "a_to_b_moe_90": 2472,
      "b_to_a": 6828,
      "b_to_a_moe_90": 2711,
      "gross_exchange": 14013,
      "directional_balance": 357,
      "dominant_direction": "Maine to Massachusetts",
      "main_flow": 7185,
      "reverse_flow": 6828,
      "reverse_share_of_main": 0.9503
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 10981,
      "a_to_b_moe_90": 3331,
      "b_to_a": 2978,
      "b_to_a_moe_90": 1974,
      "gross_exchange": 13959,
      "directional_balance": 8003,
      "dominant_direction": "New Jersey to Texas",
      "main_flow": 10981,
      "reverse_flow": 2978,
      "reverse_share_of_main": 0.2712
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 6151,
      "a_to_b_moe_90": 2840,
      "b_to_a": 7733,
      "b_to_a_moe_90": 2246,
      "gross_exchange": 13884,
      "directional_balance": 1582,
      "dominant_direction": "Virginia to Tennessee",
      "main_flow": 7733,
      "reverse_flow": 6151,
      "reverse_share_of_main": 0.7954
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 10998,
      "a_to_b_moe_90": 3794,
      "b_to_a": 2786,
      "b_to_a_moe_90": 1667,
      "gross_exchange": 13784,
      "directional_balance": 8212,
      "dominant_direction": "California to Oklahoma",
      "main_flow": 10998,
      "reverse_flow": 2786,
      "reverse_share_of_main": 0.2533
    },
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      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 8690,
      "a_to_b_moe_90": 3094,
      "b_to_a": 5028,
      "b_to_a_moe_90": 1577,
      "gross_exchange": 13718,
      "directional_balance": 3662,
      "dominant_direction": "Idaho to Utah",
      "main_flow": 8690,
      "reverse_flow": 5028,
      "reverse_share_of_main": 0.5786
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 8499,
      "a_to_b_moe_90": 2749,
      "b_to_a": 5199,
      "b_to_a_moe_90": 1913,
      "gross_exchange": 13698,
      "directional_balance": 3300,
      "dominant_direction": "Iowa to Nebraska",
      "main_flow": 8499,
      "reverse_flow": 5199,
      "reverse_share_of_main": 0.6117
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 7880,
      "a_to_b_moe_90": 2388,
      "b_to_a": 5789,
      "b_to_a_moe_90": 1957,
      "gross_exchange": 13669,
      "directional_balance": 2091,
      "dominant_direction": "California to Missouri",
      "main_flow": 7880,
      "reverse_flow": 5789,
      "reverse_share_of_main": 0.7346
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 4712,
      "a_to_b_moe_90": 1798,
      "b_to_a": 8873,
      "b_to_a_moe_90": 5283,
      "gross_exchange": 13585,
      "directional_balance": 4161,
      "dominant_direction": "Virginia to Colorado",
      "main_flow": 8873,
      "reverse_flow": 4712,
      "reverse_share_of_main": 0.531
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 7041,
      "a_to_b_moe_90": 1876,
      "b_to_a": 6506,
      "b_to_a_moe_90": 1809,
      "gross_exchange": 13547,
      "directional_balance": 535,
      "dominant_direction": "New York to Washington",
      "main_flow": 7041,
      "reverse_flow": 6506,
      "reverse_share_of_main": 0.924
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 6222,
      "a_to_b_moe_90": 2189,
      "b_to_a": 7252,
      "b_to_a_moe_90": 2695,
      "gross_exchange": 13474,
      "directional_balance": 1030,
      "dominant_direction": "Tennessee to Mississippi",
      "main_flow": 7252,
      "reverse_flow": 6222,
      "reverse_share_of_main": 0.858
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 3879,
      "a_to_b_moe_90": 1785,
      "b_to_a": 9299,
      "b_to_a_moe_90": 3363,
      "gross_exchange": 13178,
      "directional_balance": 5420,
      "dominant_direction": "Virginia to Ohio",
      "main_flow": 9299,
      "reverse_flow": 3879,
      "reverse_share_of_main": 0.4171
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 7664,
      "a_to_b_moe_90": 2070,
      "b_to_a": 5502,
      "b_to_a_moe_90": 2179,
      "gross_exchange": 13166,
      "directional_balance": 2162,
      "dominant_direction": "Louisiana to Mississippi",
      "main_flow": 7664,
      "reverse_flow": 5502,
      "reverse_share_of_main": 0.7179
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 4890,
      "a_to_b_moe_90": 1998,
      "b_to_a": 8268,
      "b_to_a_moe_90": 2508,
      "gross_exchange": 13158,
      "directional_balance": 3378,
      "dominant_direction": "Wisconsin to Florida",
      "main_flow": 8268,
      "reverse_flow": 4890,
      "reverse_share_of_main": 0.5914
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 5397,
      "a_to_b_moe_90": 2046,
      "b_to_a": 7686,
      "b_to_a_moe_90": 3824,
      "gross_exchange": 13083,
      "directional_balance": 2289,
      "dominant_direction": "Ohio to Arizona",
      "main_flow": 7686,
      "reverse_flow": 5397,
      "reverse_share_of_main": 0.7022
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 7331,
      "a_to_b_moe_90": 2678,
      "b_to_a": 5628,
      "b_to_a_moe_90": 1740,
      "gross_exchange": 12959,
      "directional_balance": 1703,
      "dominant_direction": "Georgia to Ohio",
      "main_flow": 7331,
      "reverse_flow": 5628,
      "reverse_share_of_main": 0.7677
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 8996,
      "a_to_b_moe_90": 2607,
      "b_to_a": 3871,
      "b_to_a_moe_90": 1436,
      "gross_exchange": 12867,
      "directional_balance": 5125,
      "dominant_direction": "Illinois to Tennessee",
      "main_flow": 8996,
      "reverse_flow": 3871,
      "reverse_share_of_main": 0.4303
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 4797,
      "a_to_b_moe_90": 1622,
      "b_to_a": 7863,
      "b_to_a_moe_90": 2950,
      "gross_exchange": 12660,
      "directional_balance": 3066,
      "dominant_direction": "Utah to Texas",
      "main_flow": 7863,
      "reverse_flow": 4797,
      "reverse_share_of_main": 0.6101
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
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      "state_b_fips": "39",
      "a_to_b": 6753,
      "a_to_b_moe_90": 1926,
      "b_to_a": 5887,
      "b_to_a_moe_90": 1678,
      "gross_exchange": 12640,
      "directional_balance": 866,
      "dominant_direction": "North Carolina to Ohio",
      "main_flow": 6753,
      "reverse_flow": 5887,
      "reverse_share_of_main": 0.8718
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    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
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      "state_b_fips": "37",
      "a_to_b": 8195,
      "a_to_b_moe_90": 3456,
      "b_to_a": 4418,
      "b_to_a_moe_90": 2197,
      "gross_exchange": 12613,
      "directional_balance": 3777,
      "dominant_direction": "New Jersey to North Carolina",
      "main_flow": 8195,
      "reverse_flow": 4418,
      "reverse_share_of_main": 0.5391
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 5623,
      "a_to_b_moe_90": 2124,
      "b_to_a": 6854,
      "b_to_a_moe_90": 1905,
      "gross_exchange": 12477,
      "directional_balance": 1231,
      "dominant_direction": "Texas to Oregon",
      "main_flow": 6854,
      "reverse_flow": 5623,
      "reverse_share_of_main": 0.8204
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 7926,
      "a_to_b_moe_90": 2560,
      "b_to_a": 4545,
      "b_to_a_moe_90": 1717,
      "gross_exchange": 12471,
      "directional_balance": 3381,
      "dominant_direction": "Iowa to Minnesota",
      "main_flow": 7926,
      "reverse_flow": 4545,
      "reverse_share_of_main": 0.5734
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
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      "state_b_fips": "40",
      "a_to_b": 6649,
      "a_to_b_moe_90": 2701,
      "b_to_a": 5815,
      "b_to_a_moe_90": 3535,
      "gross_exchange": 12464,
      "directional_balance": 834,
      "dominant_direction": "Colorado to Oklahoma",
      "main_flow": 6649,
      "reverse_flow": 5815,
      "reverse_share_of_main": 0.8746
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 6251,
      "a_to_b_moe_90": 2290,
      "b_to_a": 6049,
      "b_to_a_moe_90": 2491,
      "gross_exchange": 12300,
      "directional_balance": 202,
      "dominant_direction": "Colorado to North Carolina",
      "main_flow": 6251,
      "reverse_flow": 6049,
      "reverse_share_of_main": 0.9677
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 9246,
      "a_to_b_moe_90": 3242,
      "b_to_a": 2859,
      "b_to_a_moe_90": 1209,
      "gross_exchange": 12105,
      "directional_balance": 6387,
      "dominant_direction": "California to New Mexico",
      "main_flow": 9246,
      "reverse_flow": 2859,
      "reverse_share_of_main": 0.3092
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
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      "state_b_fips": "48",
      "a_to_b": 7711,
      "a_to_b_moe_90": 2536,
      "b_to_a": 4356,
      "b_to_a_moe_90": 1611,
      "gross_exchange": 12067,
      "directional_balance": 3355,
      "dominant_direction": "Indiana to Texas",
      "main_flow": 7711,
      "reverse_flow": 4356,
      "reverse_share_of_main": 0.5649
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 5479,
      "a_to_b_moe_90": 2278,
      "b_to_a": 6526,
      "b_to_a_moe_90": 2311,
      "gross_exchange": 12005,
      "directional_balance": 1047,
      "dominant_direction": "Illinois to Georgia",
      "main_flow": 6526,
      "reverse_flow": 5479,
      "reverse_share_of_main": 0.8396
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 6765,
      "a_to_b_moe_90": 3713,
      "b_to_a": 5238,
      "b_to_a_moe_90": 2315,
      "gross_exchange": 12003,
      "directional_balance": 1527,
      "dominant_direction": "Indiana to Tennessee",
      "main_flow": 6765,
      "reverse_flow": 5238,
      "reverse_share_of_main": 0.7743
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
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      "state_b_fips": "32",
      "a_to_b": 6091,
      "a_to_b_moe_90": 2180,
      "b_to_a": 5724,
      "b_to_a_moe_90": 2094,
      "gross_exchange": 11815,
      "directional_balance": 367,
      "dominant_direction": "Arizona to Nevada",
      "main_flow": 6091,
      "reverse_flow": 5724,
      "reverse_share_of_main": 0.9397
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 5506,
      "a_to_b_moe_90": 2056,
      "b_to_a": 6193,
      "b_to_a_moe_90": 1982,
      "gross_exchange": 11699,
      "directional_balance": 687,
      "dominant_direction": "Pennsylvania to Massachusetts",
      "main_flow": 6193,
      "reverse_flow": 5506,
      "reverse_share_of_main": 0.8891
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 8361,
      "a_to_b_moe_90": 3927,
      "b_to_a": 3323,
      "b_to_a_moe_90": 1498,
      "gross_exchange": 11684,
      "directional_balance": 5038,
      "dominant_direction": "California to Minnesota",
      "main_flow": 8361,
      "reverse_flow": 3323,
      "reverse_share_of_main": 0.3974
    },
    {
      "state_a": "Virginia",
      "state_a_fips": "51",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 8048,
      "a_to_b_moe_90": 3000,
      "b_to_a": 3617,
      "b_to_a_moe_90": 1505,
      "gross_exchange": 11665,
      "directional_balance": 4431,
      "dominant_direction": "Virginia to West Virginia",
      "main_flow": 8048,
      "reverse_flow": 3617,
      "reverse_share_of_main": 0.4494
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 6155,
      "a_to_b_moe_90": 2067,
      "b_to_a": 5417,
      "b_to_a_moe_90": 3142,
      "gross_exchange": 11572,
      "directional_balance": 738,
      "dominant_direction": "Illinois to Virginia",
      "main_flow": 6155,
      "reverse_flow": 5417,
      "reverse_share_of_main": 0.8801
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 7852,
      "a_to_b_moe_90": 2436,
      "b_to_a": 3708,
      "b_to_a_moe_90": 1280,
      "gross_exchange": 11560,
      "directional_balance": 4144,
      "dominant_direction": "New York to Ohio",
      "main_flow": 7852,
      "reverse_flow": 3708,
      "reverse_share_of_main": 0.4722
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 5333,
      "a_to_b_moe_90": 1643,
      "b_to_a": 6044,
      "b_to_a_moe_90": 1941,
      "gross_exchange": 11377,
      "directional_balance": 711,
      "dominant_direction": "Pennsylvania to Delaware",
      "main_flow": 6044,
      "reverse_flow": 5333,
      "reverse_share_of_main": 0.8824
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "South Carolina",
      "state_b_fips": "45",
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      "a_to_b_moe_90": 2146,
      "b_to_a": 3735,
      "b_to_a_moe_90": 1553,
      "gross_exchange": 11338,
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      "reverse_flow": 3735,
      "reverse_share_of_main": 0.4913
    },
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      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "New York",
      "state_b_fips": "36",
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      "a_to_b_moe_90": 3746,
      "b_to_a": 4023,
      "b_to_a_moe_90": 1454,
      "gross_exchange": 11063,
      "directional_balance": 3017,
      "dominant_direction": "Colorado to New York",
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      "reverse_flow": 4023,
      "reverse_share_of_main": 0.5714
    },
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      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Michigan",
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      "a_to_b": 4730,
      "a_to_b_moe_90": 2355,
      "b_to_a": 6282,
      "b_to_a_moe_90": 2326,
      "gross_exchange": 11012,
      "directional_balance": 1552,
      "dominant_direction": "Michigan to Arizona",
      "main_flow": 6282,
      "reverse_flow": 4730,
      "reverse_share_of_main": 0.7529
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 6155,
      "a_to_b_moe_90": 2145,
      "b_to_a": 4815,
      "b_to_a_moe_90": 1622,
      "gross_exchange": 10970,
      "directional_balance": 1340,
      "dominant_direction": "Minnesota to Texas",
      "main_flow": 6155,
      "reverse_flow": 4815,
      "reverse_share_of_main": 0.7823
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
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      "state_b_fips": "45",
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      "a_to_b_moe_90": 2003,
      "b_to_a": 6179,
      "b_to_a_moe_90": 2322,
      "gross_exchange": 10927,
      "directional_balance": 1431,
      "dominant_direction": "South Carolina to Ohio",
      "main_flow": 6179,
      "reverse_flow": 4748,
      "reverse_share_of_main": 0.7684
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 5305,
      "a_to_b_moe_90": 3353,
      "b_to_a": 5515,
      "b_to_a_moe_90": 1941,
      "gross_exchange": 10820,
      "directional_balance": 210,
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      "main_flow": 5515,
      "reverse_flow": 5305,
      "reverse_share_of_main": 0.9619
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Maryland",
      "state_b_fips": "24",
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      "a_to_b_moe_90": 2803,
      "b_to_a": 5490,
      "b_to_a_moe_90": 1625,
      "gross_exchange": 10806,
      "directional_balance": 174,
      "dominant_direction": "Maryland to Georgia",
      "main_flow": 5490,
      "reverse_flow": 5316,
      "reverse_share_of_main": 0.9683
    },
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      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 6515,
      "a_to_b_moe_90": 2061,
      "b_to_a": 4263,
      "b_to_a_moe_90": 2049,
      "gross_exchange": 10778,
      "directional_balance": 2252,
      "dominant_direction": "Montana to Washington",
      "main_flow": 6515,
      "reverse_flow": 4263,
      "reverse_share_of_main": 0.6543
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Minnesota",
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      "a_to_b_moe_90": 2630,
      "b_to_a": 5187,
      "b_to_a_moe_90": 1962,
      "gross_exchange": 10748,
      "directional_balance": 374,
      "dominant_direction": "Illinois to Minnesota",
      "main_flow": 5561,
      "reverse_flow": 5187,
      "reverse_share_of_main": 0.9327
    },
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      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 5043,
      "a_to_b_moe_90": 2174,
      "b_to_a": 5631,
      "b_to_a_moe_90": 2033,
      "gross_exchange": 10674,
      "directional_balance": 588,
      "dominant_direction": "West Virginia to Ohio",
      "main_flow": 5631,
      "reverse_flow": 5043,
      "reverse_share_of_main": 0.8956
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 4643,
      "a_to_b_moe_90": 2681,
      "b_to_a": 5787,
      "b_to_a_moe_90": 2599,
      "gross_exchange": 10430,
      "directional_balance": 1144,
      "dominant_direction": "Wisconsin to Michigan",
      "main_flow": 5787,
      "reverse_flow": 4643,
      "reverse_share_of_main": 0.8023
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 6104,
      "a_to_b_moe_90": 2036,
      "b_to_a": 4299,
      "b_to_a_moe_90": 1561,
      "gross_exchange": 10403,
      "directional_balance": 1805,
      "dominant_direction": "Delaware to Maryland",
      "main_flow": 6104,
      "reverse_flow": 4299,
      "reverse_share_of_main": 0.7043
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 6108,
      "a_to_b_moe_90": 2152,
      "b_to_a": 4261,
      "b_to_a_moe_90": 1831,
      "gross_exchange": 10369,
      "directional_balance": 1847,
      "dominant_direction": "Massachusetts to North Carolina",
      "main_flow": 6108,
      "reverse_flow": 4261,
      "reverse_share_of_main": 0.6976
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 5700,
      "a_to_b_moe_90": 1917,
      "b_to_a": 4593,
      "b_to_a_moe_90": 2153,
      "gross_exchange": 10293,
      "directional_balance": 1107,
      "dominant_direction": "Illinois to Pennsylvania",
      "main_flow": 5700,
      "reverse_flow": 4593,
      "reverse_share_of_main": 0.8058
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 6620,
      "a_to_b_moe_90": 2643,
      "b_to_a": 3632,
      "b_to_a_moe_90": 1737,
      "gross_exchange": 10252,
      "directional_balance": 2988,
      "dominant_direction": "Colorado to Missouri",
      "main_flow": 6620,
      "reverse_flow": 3632,
      "reverse_share_of_main": 0.5486
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 6097,
      "a_to_b_moe_90": 1997,
      "b_to_a": 4121,
      "b_to_a_moe_90": 1518,
      "gross_exchange": 10218,
      "directional_balance": 1976,
      "dominant_direction": "Arizona to Oregon",
      "main_flow": 6097,
      "reverse_flow": 4121,
      "reverse_share_of_main": 0.6759
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 6162,
      "a_to_b_moe_90": 3225,
      "b_to_a": 4008,
      "b_to_a_moe_90": 2367,
      "gross_exchange": 10170,
      "directional_balance": 2154,
      "dominant_direction": "Nebraska to Texas",
      "main_flow": 6162,
      "reverse_flow": 4008,
      "reverse_share_of_main": 0.6504
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Utah",
      "state_b_fips": "49",
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      "a_to_b_moe_90": 1465,
      "b_to_a": 5248,
      "b_to_a_moe_90": 2001,
      "gross_exchange": 10166,
      "directional_balance": 330,
      "dominant_direction": "Utah to Colorado",
      "main_flow": 5248,
      "reverse_flow": 4918,
      "reverse_share_of_main": 0.9371
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 2762,
      "a_to_b_moe_90": 1309,
      "b_to_a": 7348,
      "b_to_a_moe_90": 2707,
      "gross_exchange": 10110,
      "directional_balance": 4586,
      "dominant_direction": "New Mexico to Arizona",
      "main_flow": 7348,
      "reverse_flow": 2762,
      "reverse_share_of_main": 0.3759
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 8954,
      "a_to_b_moe_90": 3964,
      "b_to_a": 1035,
      "b_to_a_moe_90": 927,
      "gross_exchange": 9989,
      "directional_balance": 7919,
      "dominant_direction": "California to Kentucky",
      "main_flow": 8954,
      "reverse_flow": 1035,
      "reverse_share_of_main": 0.1156
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
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      "state_b_fips": "47",
      "a_to_b": 7024,
      "a_to_b_moe_90": 2893,
      "b_to_a": 2889,
      "b_to_a_moe_90": 1415,
      "gross_exchange": 9913,
      "directional_balance": 4135,
      "dominant_direction": "New York to Tennessee",
      "main_flow": 7024,
      "reverse_flow": 2889,
      "reverse_share_of_main": 0.4113
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 3453,
      "a_to_b_moe_90": 1109,
      "b_to_a": 6410,
      "b_to_a_moe_90": 3462,
      "gross_exchange": 9863,
      "directional_balance": 2957,
      "dominant_direction": "Oklahoma to Kansas",
      "main_flow": 6410,
      "reverse_flow": 3453,
      "reverse_share_of_main": 0.5387
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
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      "state_b_fips": "35",
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      "a_to_b_moe_90": 1728,
      "b_to_a": 6227,
      "b_to_a_moe_90": 2270,
      "gross_exchange": 9783,
      "directional_balance": 2671,
      "dominant_direction": "New Mexico to Colorado",
      "main_flow": 6227,
      "reverse_flow": 3556,
      "reverse_share_of_main": 0.5711
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
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      "state_b_fips": "47",
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      "a_to_b_moe_90": 1435,
      "b_to_a": 6747,
      "b_to_a_moe_90": 2579,
      "gross_exchange": 9683,
      "directional_balance": 3811,
      "dominant_direction": "Tennessee to Ohio",
      "main_flow": 6747,
      "reverse_flow": 2936,
      "reverse_share_of_main": 0.4352
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 6892,
      "a_to_b_moe_90": 1884,
      "b_to_a": 2788,
      "b_to_a_moe_90": 1319,
      "gross_exchange": 9680,
      "directional_balance": 4104,
      "dominant_direction": "Pennsylvania to West Virginia",
      "main_flow": 6892,
      "reverse_flow": 2788,
      "reverse_share_of_main": 0.4045
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    {
      "state_a": "Illinois",
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      "a_to_b_moe_90": 2041,
      "b_to_a": 5134,
      "b_to_a_moe_90": 1955,
      "gross_exchange": 9511,
      "directional_balance": 757,
      "dominant_direction": "North Carolina to Illinois",
      "main_flow": 5134,
      "reverse_flow": 4377,
      "reverse_share_of_main": 0.8526
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Louisiana",
      "state_b_fips": "22",
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      "a_to_b_moe_90": 1719,
      "b_to_a": 6533,
      "b_to_a_moe_90": 2315,
      "gross_exchange": 9461,
      "directional_balance": 3605,
      "dominant_direction": "Louisiana to Georgia",
      "main_flow": 6533,
      "reverse_flow": 2928,
      "reverse_share_of_main": 0.4482
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
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      "state_b_fips": "37",
      "a_to_b": 4910,
      "a_to_b_moe_90": 1824,
      "b_to_a": 4496,
      "b_to_a_moe_90": 1973,
      "gross_exchange": 9406,
      "directional_balance": 414,
      "dominant_direction": "Michigan to North Carolina",
      "main_flow": 4910,
      "reverse_flow": 4496,
      "reverse_share_of_main": 0.9157
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
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      "state_b_fips": "29",
      "a_to_b": 5801,
      "a_to_b_moe_90": 2415,
      "b_to_a": 3604,
      "b_to_a_moe_90": 1583,
      "gross_exchange": 9405,
      "directional_balance": 2197,
      "dominant_direction": "Arizona to Missouri",
      "main_flow": 5801,
      "reverse_flow": 3604,
      "reverse_share_of_main": 0.6213
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 4288,
      "a_to_b_moe_90": 1770,
      "b_to_a": 5115,
      "b_to_a_moe_90": 2639,
      "gross_exchange": 9403,
      "directional_balance": 827,
      "dominant_direction": "Idaho to Arizona",
      "main_flow": 5115,
      "reverse_flow": 4288,
      "reverse_share_of_main": 0.8383
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
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      "state_b_fips": "29",
      "a_to_b": 4319,
      "a_to_b_moe_90": 1865,
      "b_to_a": 4900,
      "b_to_a_moe_90": 2247,
      "gross_exchange": 9219,
      "directional_balance": 581,
      "dominant_direction": "Missouri to Arkansas",
      "main_flow": 4900,
      "reverse_flow": 4319,
      "reverse_share_of_main": 0.8814
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Washington",
      "state_b_fips": "53",
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      "a_to_b_moe_90": 2243,
      "b_to_a": 4071,
      "b_to_a_moe_90": 1986,
      "gross_exchange": 9197,
      "directional_balance": 1055,
      "dominant_direction": "Illinois to Washington",
      "main_flow": 5126,
      "reverse_flow": 4071,
      "reverse_share_of_main": 0.7942
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 3683,
      "a_to_b_moe_90": 1875,
      "b_to_a": 5466,
      "b_to_a_moe_90": 1359,
      "gross_exchange": 9149,
      "directional_balance": 1783,
      "dominant_direction": "New Jersey to Massachusetts",
      "main_flow": 5466,
      "reverse_flow": 3683,
      "reverse_share_of_main": 0.6738
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 6103,
      "a_to_b_moe_90": 2110,
      "b_to_a": 3010,
      "b_to_a_moe_90": 1261,
      "gross_exchange": 9113,
      "directional_balance": 3093,
      "dominant_direction": "California to Wisconsin",
      "main_flow": 6103,
      "reverse_flow": 3010,
      "reverse_share_of_main": 0.4932
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Florida",
      "state_b_fips": "12",
      "a_to_b": 4668,
      "a_to_b_moe_90": 2670,
      "b_to_a": 4385,
      "b_to_a_moe_90": 1884,
      "gross_exchange": 9053,
      "directional_balance": 283,
      "dominant_direction": "Arkansas to Florida",
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      "reverse_flow": 4385,
      "reverse_share_of_main": 0.9394
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 4554,
      "a_to_b_moe_90": 2016,
      "b_to_a": 4471,
      "b_to_a_moe_90": 1801,
      "gross_exchange": 9025,
      "directional_balance": 83,
      "dominant_direction": "Idaho to Oregon",
      "main_flow": 4554,
      "reverse_flow": 4471,
      "reverse_share_of_main": 0.9818
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 2841,
      "a_to_b_moe_90": 1548,
      "b_to_a": 6158,
      "b_to_a_moe_90": 3209,
      "gross_exchange": 8999,
      "directional_balance": 3317,
      "dominant_direction": "Utah to Florida",
      "main_flow": 6158,
      "reverse_flow": 2841,
      "reverse_share_of_main": 0.4614
    },
    {
      "state_a": "Virginia",
      "state_a_fips": "51",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 5562,
      "a_to_b_moe_90": 2375,
      "b_to_a": 3385,
      "b_to_a_moe_90": 1563,
      "gross_exchange": 8947,
      "directional_balance": 2177,
      "dominant_direction": "Virginia to Washington",
      "main_flow": 5562,
      "reverse_flow": 3385,
      "reverse_share_of_main": 0.6086
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
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      "state_b_fips": "40",
      "a_to_b": 5196,
      "a_to_b_moe_90": 1492,
      "b_to_a": 3745,
      "b_to_a_moe_90": 1469,
      "gross_exchange": 8941,
      "directional_balance": 1451,
      "dominant_direction": "Arkansas to Oklahoma",
      "main_flow": 5196,
      "reverse_flow": 3745,
      "reverse_share_of_main": 0.7207
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 6880,
      "a_to_b_moe_90": 3635,
      "b_to_a": 1984,
      "b_to_a_moe_90": 1390,
      "gross_exchange": 8864,
      "directional_balance": 4896,
      "dominant_direction": "New Jersey to Ohio",
      "main_flow": 6880,
      "reverse_flow": 1984,
      "reverse_share_of_main": 0.2884
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 3915,
      "a_to_b_moe_90": 2341,
      "b_to_a": 4947,
      "b_to_a_moe_90": 2445,
      "gross_exchange": 8862,
      "directional_balance": 1032,
      "dominant_direction": "Texas to Hawaii",
      "main_flow": 4947,
      "reverse_flow": 3915,
      "reverse_share_of_main": 0.7914
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 4480,
      "a_to_b_moe_90": 1624,
      "b_to_a": 4358,
      "b_to_a_moe_90": 1687,
      "gross_exchange": 8838,
      "directional_balance": 122,
      "dominant_direction": "Florida to Louisiana",
      "main_flow": 4480,
      "reverse_flow": 4358,
      "reverse_share_of_main": 0.9728
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 6747,
      "a_to_b_moe_90": 2605,
      "b_to_a": 2063,
      "b_to_a_moe_90": 1003,
      "gross_exchange": 8810,
      "directional_balance": 4684,
      "dominant_direction": "Colorado to Kansas",
      "main_flow": 6747,
      "reverse_flow": 2063,
      "reverse_share_of_main": 0.3058
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 3009,
      "a_to_b_moe_90": 2009,
      "b_to_a": 5733,
      "b_to_a_moe_90": 3631,
      "gross_exchange": 8742,
      "directional_balance": 2724,
      "dominant_direction": "New Jersey to Indiana",
      "main_flow": 5733,
      "reverse_flow": 3009,
      "reverse_share_of_main": 0.5249
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 5501,
      "a_to_b_moe_90": 3213,
      "b_to_a": 3156,
      "b_to_a_moe_90": 1542,
      "gross_exchange": 8657,
      "directional_balance": 2345,
      "dominant_direction": "Arizona to Georgia",
      "main_flow": 5501,
      "reverse_flow": 3156,
      "reverse_share_of_main": 0.5737
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 5007,
      "a_to_b_moe_90": 2072,
      "b_to_a": 3608,
      "b_to_a_moe_90": 1709,
      "gross_exchange": 8615,
      "directional_balance": 1399,
      "dominant_direction": "Colorado to Georgia",
      "main_flow": 5007,
      "reverse_flow": 3608,
      "reverse_share_of_main": 0.7206
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Connecticut",
      "state_b_fips": "09",
      "a_to_b": 3066,
      "a_to_b_moe_90": 1274,
      "b_to_a": 5544,
      "b_to_a_moe_90": 1806,
      "gross_exchange": 8610,
      "directional_balance": 2478,
      "dominant_direction": "Connecticut to California",
      "main_flow": 5544,
      "reverse_flow": 3066,
      "reverse_share_of_main": 0.553
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 4850,
      "a_to_b_moe_90": 2831,
      "b_to_a": 3760,
      "b_to_a_moe_90": 2526,
      "gross_exchange": 8610,
      "directional_balance": 1090,
      "dominant_direction": "Florida to Hawaii",
      "main_flow": 4850,
      "reverse_flow": 3760,
      "reverse_share_of_main": 0.7753
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 5764,
      "a_to_b_moe_90": 2292,
      "b_to_a": 2827,
      "b_to_a_moe_90": 1673,
      "gross_exchange": 8591,
      "directional_balance": 2937,
      "dominant_direction": "Georgia to Kentucky",
      "main_flow": 5764,
      "reverse_flow": 2827,
      "reverse_share_of_main": 0.4905
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 4175,
      "a_to_b_moe_90": 1813,
      "b_to_a": 4397,
      "b_to_a_moe_90": 2170,
      "gross_exchange": 8572,
      "directional_balance": 222,
      "dominant_direction": "Washington to Nevada",
      "main_flow": 4397,
      "reverse_flow": 4175,
      "reverse_share_of_main": 0.9495
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 3783,
      "a_to_b_moe_90": 1036,
      "b_to_a": 4779,
      "b_to_a_moe_90": 1875,
      "gross_exchange": 8562,
      "directional_balance": 996,
      "dominant_direction": "Virginia to Massachusetts",
      "main_flow": 4779,
      "reverse_flow": 3783,
      "reverse_share_of_main": 0.7916
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 2560,
      "a_to_b_moe_90": 1358,
      "b_to_a": 6000,
      "b_to_a_moe_90": 1446,
      "gross_exchange": 8560,
      "directional_balance": 3440,
      "dominant_direction": "Minnesota to Arizona",
      "main_flow": 6000,
      "reverse_flow": 2560,
      "reverse_share_of_main": 0.4267
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 5361,
      "a_to_b_moe_90": 4109,
      "b_to_a": 3198,
      "b_to_a_moe_90": 1482,
      "gross_exchange": 8559,
      "directional_balance": 2163,
      "dominant_direction": "Georgia to Michigan",
      "main_flow": 5361,
      "reverse_flow": 3198,
      "reverse_share_of_main": 0.5965
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 4304,
      "a_to_b_moe_90": 1502,
      "b_to_a": 4243,
      "b_to_a_moe_90": 1558,
      "gross_exchange": 8547,
      "directional_balance": 61,
      "dominant_direction": "Michigan to New York",
      "main_flow": 4304,
      "reverse_flow": 4243,
      "reverse_share_of_main": 0.9858
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "California",
      "state_b_fips": "06",
      "a_to_b": 1721,
      "a_to_b_moe_90": 862,
      "b_to_a": 6730,
      "b_to_a_moe_90": 2576,
      "gross_exchange": 8451,
      "directional_balance": 5009,
      "dominant_direction": "California to Alabama",
      "main_flow": 6730,
      "reverse_flow": 1721,
      "reverse_share_of_main": 0.2557
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 3277,
      "a_to_b_moe_90": 1738,
      "b_to_a": 5160,
      "b_to_a_moe_90": 2272,
      "gross_exchange": 8437,
      "directional_balance": 1883,
      "dominant_direction": "Massachusetts to Georgia",
      "main_flow": 5160,
      "reverse_flow": 3277,
      "reverse_share_of_main": 0.6351
    },
    {
      "state_a": "Utah",
      "state_a_fips": "49",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 4012,
      "a_to_b_moe_90": 1889,
      "b_to_a": 4257,
      "b_to_a_moe_90": 1950,
      "gross_exchange": 8269,
      "directional_balance": 245,
      "dominant_direction": "Washington to Utah",
      "main_flow": 4257,
      "reverse_flow": 4012,
      "reverse_share_of_main": 0.9424
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 2035,
      "a_to_b_moe_90": 938,
      "b_to_a": 6227,
      "b_to_a_moe_90": 2591,
      "gross_exchange": 8262,
      "directional_balance": 4192,
      "dominant_direction": "New Jersey to Georgia",
      "main_flow": 6227,
      "reverse_flow": 2035,
      "reverse_share_of_main": 0.3268
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 5317,
      "a_to_b_moe_90": 2393,
      "b_to_a": 2936,
      "b_to_a_moe_90": 1161,
      "gross_exchange": 8253,
      "directional_balance": 2381,
      "dominant_direction": "New York to Vermont",
      "main_flow": 5317,
      "reverse_flow": 2936,
      "reverse_share_of_main": 0.5522
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 5728,
      "a_to_b_moe_90": 3048,
      "b_to_a": 2515,
      "b_to_a_moe_90": 1208,
      "gross_exchange": 8243,
      "directional_balance": 3213,
      "dominant_direction": "Georgia to Indiana",
      "main_flow": 5728,
      "reverse_flow": 2515,
      "reverse_share_of_main": 0.4391
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 3194,
      "a_to_b_moe_90": 1882,
      "b_to_a": 5022,
      "b_to_a_moe_90": 3028,
      "gross_exchange": 8216,
      "directional_balance": 1828,
      "dominant_direction": "Virginia to Alabama",
      "main_flow": 5022,
      "reverse_flow": 3194,
      "reverse_share_of_main": 0.636
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 3443,
      "a_to_b_moe_90": 2463,
      "b_to_a": 4717,
      "b_to_a_moe_90": 3295,
      "gross_exchange": 8160,
      "directional_balance": 1274,
      "dominant_direction": "Virginia to Nevada",
      "main_flow": 4717,
      "reverse_flow": 3443,
      "reverse_share_of_main": 0.7299
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 4366,
      "a_to_b_moe_90": 1921,
      "b_to_a": 3779,
      "b_to_a_moe_90": 2151,
      "gross_exchange": 8145,
      "directional_balance": 587,
      "dominant_direction": "Colorado to Tennessee",
      "main_flow": 4366,
      "reverse_flow": 3779,
      "reverse_share_of_main": 0.8656
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 7104,
      "a_to_b_moe_90": 2472,
      "b_to_a": 1039,
      "b_to_a_moe_90": 782,
      "gross_exchange": 8143,
      "directional_balance": 6065,
      "dominant_direction": "Illinois to South Carolina",
      "main_flow": 7104,
      "reverse_flow": 1039,
      "reverse_share_of_main": 0.1463
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 3718,
      "a_to_b_moe_90": 1809,
      "b_to_a": 4410,
      "b_to_a_moe_90": 1704,
      "gross_exchange": 8128,
      "directional_balance": 692,
      "dominant_direction": "Louisiana to California",
      "main_flow": 4410,
      "reverse_flow": 3718,
      "reverse_share_of_main": 0.8431
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 4464,
      "a_to_b_moe_90": 1812,
      "b_to_a": 3651,
      "b_to_a_moe_90": 1545,
      "gross_exchange": 8115,
      "directional_balance": 813,
      "dominant_direction": "Oregon to Utah",
      "main_flow": 4464,
      "reverse_flow": 3651,
      "reverse_share_of_main": 0.8179
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 3363,
      "a_to_b_moe_90": 2131,
      "b_to_a": 4742,
      "b_to_a_moe_90": 4385,
      "gross_exchange": 8105,
      "directional_balance": 1379,
      "dominant_direction": "Washington to Minnesota",
      "main_flow": 4742,
      "reverse_flow": 3363,
      "reverse_share_of_main": 0.7092
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 3103,
      "a_to_b_moe_90": 1295,
      "b_to_a": 4992,
      "b_to_a_moe_90": 2686,
      "gross_exchange": 8095,
      "directional_balance": 1889,
      "dominant_direction": "New Hampshire to Maine",
      "main_flow": 4992,
      "reverse_flow": 3103,
      "reverse_share_of_main": 0.6216
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 3181,
      "a_to_b_moe_90": 1413,
      "b_to_a": 4881,
      "b_to_a_moe_90": 1931,
      "gross_exchange": 8062,
      "directional_balance": 1700,
      "dominant_direction": "New York to Arizona",
      "main_flow": 4881,
      "reverse_flow": 3181,
      "reverse_share_of_main": 0.6517
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 6542,
      "a_to_b_moe_90": 2773,
      "b_to_a": 1508,
      "b_to_a_moe_90": 755,
      "gross_exchange": 8050,
      "directional_balance": 5034,
      "dominant_direction": "Colorado to Wyoming",
      "main_flow": 6542,
      "reverse_flow": 1508,
      "reverse_share_of_main": 0.2305
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 5272,
      "a_to_b_moe_90": 1502,
      "b_to_a": 2772,
      "b_to_a_moe_90": 1429,
      "gross_exchange": 8044,
      "directional_balance": 2500,
      "dominant_direction": "Colorado to Oregon",
      "main_flow": 5272,
      "reverse_flow": 2772,
      "reverse_share_of_main": 0.5258
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 4915,
      "a_to_b_moe_90": 2818,
      "b_to_a": 3065,
      "b_to_a_moe_90": 1718,
      "gross_exchange": 7980,
      "directional_balance": 1850,
      "dominant_direction": "Hawaii to Virginia",
      "main_flow": 4915,
      "reverse_flow": 3065,
      "reverse_share_of_main": 0.6236
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 4078,
      "a_to_b_moe_90": 2366,
      "b_to_a": 3902,
      "b_to_a_moe_90": 1725,
      "gross_exchange": 7980,
      "directional_balance": 176,
      "dominant_direction": "Georgia to Missouri",
      "main_flow": 4078,
      "reverse_flow": 3902,
      "reverse_share_of_main": 0.9568
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 2887,
      "a_to_b_moe_90": 954,
      "b_to_a": 5072,
      "b_to_a_moe_90": 1992,
      "gross_exchange": 7959,
      "directional_balance": 2185,
      "dominant_direction": "Massachusetts to Illinois",
      "main_flow": 5072,
      "reverse_flow": 2887,
      "reverse_share_of_main": 0.5692
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 4463,
      "a_to_b_moe_90": 1482,
      "b_to_a": 3320,
      "b_to_a_moe_90": 1193,
      "gross_exchange": 7783,
      "directional_balance": 1143,
      "dominant_direction": "District of Columbia to New York",
      "main_flow": 4463,
      "reverse_flow": 3320,
      "reverse_share_of_main": 0.7439
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 2952,
      "a_to_b_moe_90": 1655,
      "b_to_a": 4815,
      "b_to_a_moe_90": 2110,
      "gross_exchange": 7767,
      "directional_balance": 1863,
      "dominant_direction": "Kansas to Florida",
      "main_flow": 4815,
      "reverse_flow": 2952,
      "reverse_share_of_main": 0.6131
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 3889,
      "a_to_b_moe_90": 2424,
      "b_to_a": 3838,
      "b_to_a_moe_90": 2040,
      "gross_exchange": 7727,
      "directional_balance": 51,
      "dominant_direction": "Missouri to North Carolina",
      "main_flow": 3889,
      "reverse_flow": 3838,
      "reverse_share_of_main": 0.9869
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 4891,
      "a_to_b_moe_90": 2513,
      "b_to_a": 2794,
      "b_to_a_moe_90": 1092,
      "gross_exchange": 7685,
      "directional_balance": 2097,
      "dominant_direction": "South Carolina to Tennessee",
      "main_flow": 4891,
      "reverse_flow": 2794,
      "reverse_share_of_main": 0.5713
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 3949,
      "a_to_b_moe_90": 1507,
      "b_to_a": 3629,
      "b_to_a_moe_90": 1700,
      "gross_exchange": 7578,
      "directional_balance": 320,
      "dominant_direction": "Iowa to Texas",
      "main_flow": 3949,
      "reverse_flow": 3629,
      "reverse_share_of_main": 0.919
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 4261,
      "a_to_b_moe_90": 2140,
      "b_to_a": 3134,
      "b_to_a_moe_90": 1078,
      "gross_exchange": 7395,
      "directional_balance": 1127,
      "dominant_direction": "Georgia to Washington",
      "main_flow": 4261,
      "reverse_flow": 3134,
      "reverse_share_of_main": 0.7355
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 2054,
      "a_to_b_moe_90": 1316,
      "b_to_a": 5323,
      "b_to_a_moe_90": 1753,
      "gross_exchange": 7377,
      "directional_balance": 3269,
      "dominant_direction": "New Jersey to Connecticut",
      "main_flow": 5323,
      "reverse_flow": 2054,
      "reverse_share_of_main": 0.3859
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 5139,
      "a_to_b_moe_90": 1316,
      "b_to_a": 2185,
      "b_to_a_moe_90": 904,
      "gross_exchange": 7324,
      "directional_balance": 2954,
      "dominant_direction": "California to District of Columbia",
      "main_flow": 5139,
      "reverse_flow": 2185,
      "reverse_share_of_main": 0.4252
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 5265,
      "a_to_b_moe_90": 2519,
      "b_to_a": 2020,
      "b_to_a_moe_90": 729,
      "gross_exchange": 7285,
      "directional_balance": 3245,
      "dominant_direction": "Massachusetts to Vermont",
      "main_flow": 5265,
      "reverse_flow": 2020,
      "reverse_share_of_main": 0.3837
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 4484,
      "a_to_b_moe_90": 2089,
      "b_to_a": 2792,
      "b_to_a_moe_90": 1290,
      "gross_exchange": 7276,
      "directional_balance": 1692,
      "dominant_direction": "Minnesota to South Dakota",
      "main_flow": 4484,
      "reverse_flow": 2792,
      "reverse_share_of_main": 0.6227
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 5363,
      "a_to_b_moe_90": 2205,
      "b_to_a": 1886,
      "b_to_a_moe_90": 836,
      "gross_exchange": 7249,
      "directional_balance": 3477,
      "dominant_direction": "Connecticut to Pennsylvania",
      "main_flow": 5363,
      "reverse_flow": 1886,
      "reverse_share_of_main": 0.3517
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 2166,
      "a_to_b_moe_90": 856,
      "b_to_a": 5009,
      "b_to_a_moe_90": 3919,
      "gross_exchange": 7175,
      "directional_balance": 2843,
      "dominant_direction": "Mississippi to Florida",
      "main_flow": 5009,
      "reverse_flow": 2166,
      "reverse_share_of_main": 0.4324
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 4849,
      "a_to_b_moe_90": 1865,
      "b_to_a": 2300,
      "b_to_a_moe_90": 1155,
      "gross_exchange": 7149,
      "directional_balance": 2549,
      "dominant_direction": "Kentucky to Virginia",
      "main_flow": 4849,
      "reverse_flow": 2300,
      "reverse_share_of_main": 0.4743
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 4535,
      "a_to_b_moe_90": 2950,
      "b_to_a": 2568,
      "b_to_a_moe_90": 1540,
      "gross_exchange": 7103,
      "directional_balance": 1967,
      "dominant_direction": "Arkansas to Mississippi",
      "main_flow": 4535,
      "reverse_flow": 2568,
      "reverse_share_of_main": 0.5663
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 2871,
      "a_to_b_moe_90": 1427,
      "b_to_a": 4210,
      "b_to_a_moe_90": 3347,
      "gross_exchange": 7081,
      "directional_balance": 1339,
      "dominant_direction": "North Carolina to Kentucky",
      "main_flow": 4210,
      "reverse_flow": 2871,
      "reverse_share_of_main": 0.6819
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 1145,
      "a_to_b_moe_90": 760,
      "b_to_a": 5874,
      "b_to_a_moe_90": 2073,
      "gross_exchange": 7019,
      "directional_balance": 4729,
      "dominant_direction": "New Jersey to Maryland",
      "main_flow": 5874,
      "reverse_flow": 1145,
      "reverse_share_of_main": 0.1949
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 2749,
      "a_to_b_moe_90": 1230,
      "b_to_a": 4235,
      "b_to_a_moe_90": 1175,
      "gross_exchange": 6984,
      "directional_balance": 1486,
      "dominant_direction": "Illinois to Colorado",
      "main_flow": 4235,
      "reverse_flow": 2749,
      "reverse_share_of_main": 0.6491
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 2076,
      "a_to_b_moe_90": 1649,
      "b_to_a": 4844,
      "b_to_a_moe_90": 2324,
      "gross_exchange": 6920,
      "directional_balance": 2768,
      "dominant_direction": "Montana to Arizona",
      "main_flow": 4844,
      "reverse_flow": 2076,
      "reverse_share_of_main": 0.4286
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 4870,
      "a_to_b_moe_90": 3908,
      "b_to_a": 2038,
      "b_to_a_moe_90": 1680,
      "gross_exchange": 6908,
      "directional_balance": 2832,
      "dominant_direction": "Illinois to Oklahoma",
      "main_flow": 4870,
      "reverse_flow": 2038,
      "reverse_share_of_main": 0.4185
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 4619,
      "a_to_b_moe_90": 1949,
      "b_to_a": 2284,
      "b_to_a_moe_90": 1214,
      "gross_exchange": 6903,
      "directional_balance": 2335,
      "dominant_direction": "Michigan to Tennessee",
      "main_flow": 4619,
      "reverse_flow": 2284,
      "reverse_share_of_main": 0.4945
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 2517,
      "a_to_b_moe_90": 1205,
      "b_to_a": 4382,
      "b_to_a_moe_90": 1606,
      "gross_exchange": 6899,
      "directional_balance": 1865,
      "dominant_direction": "Massachusetts to Maryland",
      "main_flow": 4382,
      "reverse_flow": 2517,
      "reverse_share_of_main": 0.5744
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 4316,
      "a_to_b_moe_90": 1890,
      "b_to_a": 2578,
      "b_to_a_moe_90": 1073,
      "gross_exchange": 6894,
      "directional_balance": 1738,
      "dominant_direction": "California to Montana",
      "main_flow": 4316,
      "reverse_flow": 2578,
      "reverse_share_of_main": 0.5973
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 3433,
      "a_to_b_moe_90": 1737,
      "b_to_a": 3452,
      "b_to_a_moe_90": 1721,
      "gross_exchange": 6885,
      "directional_balance": 19,
      "dominant_direction": "Indiana to Colorado",
      "main_flow": 3452,
      "reverse_flow": 3433,
      "reverse_share_of_main": 0.9945
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 3061,
      "a_to_b_moe_90": 1240,
      "b_to_a": 3768,
      "b_to_a_moe_90": 1598,
      "gross_exchange": 6829,
      "directional_balance": 707,
      "dominant_direction": "Nebraska to Colorado",
      "main_flow": 3768,
      "reverse_flow": 3061,
      "reverse_share_of_main": 0.8124
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 1176,
      "a_to_b_moe_90": 691,
      "b_to_a": 5614,
      "b_to_a_moe_90": 3322,
      "gross_exchange": 6790,
      "directional_balance": 4438,
      "dominant_direction": "Indiana to Arizona",
      "main_flow": 5614,
      "reverse_flow": 1176,
      "reverse_share_of_main": 0.2095
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 3743,
      "a_to_b_moe_90": 2128,
      "b_to_a": 3044,
      "b_to_a_moe_90": 1784,
      "gross_exchange": 6787,
      "directional_balance": 699,
      "dominant_direction": "Florida to Oklahoma",
      "main_flow": 3743,
      "reverse_flow": 3044,
      "reverse_share_of_main": 0.8133
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 2767,
      "a_to_b_moe_90": 1828,
      "b_to_a": 3998,
      "b_to_a_moe_90": 2377,
      "gross_exchange": 6765,
      "directional_balance": 1231,
      "dominant_direction": "Pennsylvania to District of Columbia",
      "main_flow": 3998,
      "reverse_flow": 2767,
      "reverse_share_of_main": 0.6921
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 4378,
      "a_to_b_moe_90": 4067,
      "b_to_a": 2371,
      "b_to_a_moe_90": 1125,
      "gross_exchange": 6749,
      "directional_balance": 2007,
      "dominant_direction": "Indiana to Wisconsin",
      "main_flow": 4378,
      "reverse_flow": 2371,
      "reverse_share_of_main": 0.5416
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 4220,
      "a_to_b_moe_90": 1988,
      "b_to_a": 2526,
      "b_to_a_moe_90": 1452,
      "gross_exchange": 6746,
      "directional_balance": 1694,
      "dominant_direction": "Kentucky to Texas",
      "main_flow": 4220,
      "reverse_flow": 2526,
      "reverse_share_of_main": 0.5986
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 4820,
      "a_to_b_moe_90": 1861,
      "b_to_a": 1845,
      "b_to_a_moe_90": 1091,
      "gross_exchange": 6665,
      "directional_balance": 2975,
      "dominant_direction": "Alabama to North Carolina",
      "main_flow": 4820,
      "reverse_flow": 1845,
      "reverse_share_of_main": 0.3828
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 3762,
      "a_to_b_moe_90": 1944,
      "b_to_a": 2771,
      "b_to_a_moe_90": 1302,
      "gross_exchange": 6533,
      "directional_balance": 991,
      "dominant_direction": "Colorado to Ohio",
      "main_flow": 3762,
      "reverse_flow": 2771,
      "reverse_share_of_main": 0.7366
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 3564,
      "a_to_b_moe_90": 1838,
      "b_to_a": 2968,
      "b_to_a_moe_90": 1099,
      "gross_exchange": 6532,
      "directional_balance": 596,
      "dominant_direction": "Missouri to Oklahoma",
      "main_flow": 3564,
      "reverse_flow": 2968,
      "reverse_share_of_main": 0.8328
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 2845,
      "a_to_b_moe_90": 2127,
      "b_to_a": 3637,
      "b_to_a_moe_90": 2399,
      "gross_exchange": 6482,
      "directional_balance": 792,
      "dominant_direction": "Nebraska to Kansas",
      "main_flow": 3637,
      "reverse_flow": 2845,
      "reverse_share_of_main": 0.7822
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2629,
      "a_to_b_moe_90": 1122,
      "b_to_a": 3849,
      "b_to_a_moe_90": 1401,
      "gross_exchange": 6478,
      "directional_balance": 1220,
      "dominant_direction": "Washington to Hawaii",
      "main_flow": 3849,
      "reverse_flow": 2629,
      "reverse_share_of_main": 0.683
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 4567,
      "a_to_b_moe_90": 1550,
      "b_to_a": 1888,
      "b_to_a_moe_90": 957,
      "gross_exchange": 6455,
      "directional_balance": 2679,
      "dominant_direction": "California to Kansas",
      "main_flow": 4567,
      "reverse_flow": 1888,
      "reverse_share_of_main": 0.4134
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 2700,
      "a_to_b_moe_90": 2068,
      "b_to_a": 3731,
      "b_to_a_moe_90": 2491,
      "gross_exchange": 6431,
      "directional_balance": 1031,
      "dominant_direction": "Pennsylvania to Indiana",
      "main_flow": 3731,
      "reverse_flow": 2700,
      "reverse_share_of_main": 0.7237
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 3186,
      "a_to_b_moe_90": 1537,
      "b_to_a": 3128,
      "b_to_a_moe_90": 1063,
      "gross_exchange": 6314,
      "directional_balance": 58,
      "dominant_direction": "Illinois to New Jersey",
      "main_flow": 3186,
      "reverse_flow": 3128,
      "reverse_share_of_main": 0.9818
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 1861,
      "a_to_b_moe_90": 1059,
      "b_to_a": 4441,
      "b_to_a_moe_90": 2330,
      "gross_exchange": 6302,
      "directional_balance": 2580,
      "dominant_direction": "Iowa to Arizona",
      "main_flow": 4441,
      "reverse_flow": 1861,
      "reverse_share_of_main": 0.419
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 1687,
      "a_to_b_moe_90": 666,
      "b_to_a": 4614,
      "b_to_a_moe_90": 2197,
      "gross_exchange": 6301,
      "directional_balance": 2927,
      "dominant_direction": "Kansas to Illinois",
      "main_flow": 4614,
      "reverse_flow": 1687,
      "reverse_share_of_main": 0.3656
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 2252,
      "a_to_b_moe_90": 804,
      "b_to_a": 4026,
      "b_to_a_moe_90": 2237,
      "gross_exchange": 6278,
      "directional_balance": 1774,
      "dominant_direction": "Nevada to Idaho",
      "main_flow": 4026,
      "reverse_flow": 2252,
      "reverse_share_of_main": 0.5594
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 2652,
      "a_to_b_moe_90": 1566,
      "b_to_a": 3624,
      "b_to_a_moe_90": 2171,
      "gross_exchange": 6276,
      "directional_balance": 972,
      "dominant_direction": "Maine to Florida",
      "main_flow": 3624,
      "reverse_flow": 2652,
      "reverse_share_of_main": 0.7318
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 3723,
      "a_to_b_moe_90": 2113,
      "b_to_a": 2541,
      "b_to_a_moe_90": 1270,
      "gross_exchange": 6264,
      "directional_balance": 1182,
      "dominant_direction": "Iowa to South Dakota",
      "main_flow": 3723,
      "reverse_flow": 2541,
      "reverse_share_of_main": 0.6825
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 3388,
      "a_to_b_moe_90": 1252,
      "b_to_a": 2860,
      "b_to_a_moe_90": 1024,
      "gross_exchange": 6248,
      "directional_balance": 528,
      "dominant_direction": "Delaware to New Jersey",
      "main_flow": 3388,
      "reverse_flow": 2860,
      "reverse_share_of_main": 0.8442
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 3458,
      "a_to_b_moe_90": 1146,
      "b_to_a": 2789,
      "b_to_a_moe_90": 1308,
      "gross_exchange": 6247,
      "directional_balance": 669,
      "dominant_direction": "New Hampshire to New York",
      "main_flow": 3458,
      "reverse_flow": 2789,
      "reverse_share_of_main": 0.8065
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 3748,
      "a_to_b_moe_90": 1615,
      "b_to_a": 2486,
      "b_to_a_moe_90": 1074,
      "gross_exchange": 6234,
      "directional_balance": 1262,
      "dominant_direction": "Iowa to Wisconsin",
      "main_flow": 3748,
      "reverse_flow": 2486,
      "reverse_share_of_main": 0.6633
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 3075,
      "a_to_b_moe_90": 1597,
      "b_to_a": 3142,
      "b_to_a_moe_90": 1275,
      "gross_exchange": 6217,
      "directional_balance": 67,
      "dominant_direction": "Mississippi to Georgia",
      "main_flow": 3142,
      "reverse_flow": 3075,
      "reverse_share_of_main": 0.9787
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 4091,
      "a_to_b_moe_90": 1529,
      "b_to_a": 2097,
      "b_to_a_moe_90": 1012,
      "gross_exchange": 6188,
      "directional_balance": 1994,
      "dominant_direction": "Maryland to South Carolina",
      "main_flow": 4091,
      "reverse_flow": 2097,
      "reverse_share_of_main": 0.5126
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 3426,
      "a_to_b_moe_90": 1714,
      "b_to_a": 2749,
      "b_to_a_moe_90": 1708,
      "gross_exchange": 6175,
      "directional_balance": 677,
      "dominant_direction": "Indiana to North Carolina",
      "main_flow": 3426,
      "reverse_flow": 2749,
      "reverse_share_of_main": 0.8024
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1765,
      "a_to_b_moe_90": 1494,
      "b_to_a": 4402,
      "b_to_a_moe_90": 2224,
      "gross_exchange": 6167,
      "directional_balance": 2637,
      "dominant_direction": "Tennessee to Oklahoma",
      "main_flow": 4402,
      "reverse_flow": 1765,
      "reverse_share_of_main": 0.401
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 3300,
      "a_to_b_moe_90": 1823,
      "b_to_a": 2858,
      "b_to_a_moe_90": 1695,
      "gross_exchange": 6158,
      "directional_balance": 442,
      "dominant_direction": "Indiana to Missouri",
      "main_flow": 3300,
      "reverse_flow": 2858,
      "reverse_share_of_main": 0.8661
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 2599,
      "a_to_b_moe_90": 1077,
      "b_to_a": 3552,
      "b_to_a_moe_90": 1718,
      "gross_exchange": 6151,
      "directional_balance": 953,
      "dominant_direction": "Utah to Nevada",
      "main_flow": 3552,
      "reverse_flow": 2599,
      "reverse_share_of_main": 0.7317
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 2970,
      "a_to_b_moe_90": 1240,
      "b_to_a": 3146,
      "b_to_a_moe_90": 1642,
      "gross_exchange": 6116,
      "directional_balance": 176,
      "dominant_direction": "Virginia to Indiana",
      "main_flow": 3146,
      "reverse_flow": 2970,
      "reverse_share_of_main": 0.9441
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 3403,
      "a_to_b_moe_90": 1418,
      "b_to_a": 2662,
      "b_to_a_moe_90": 1135,
      "gross_exchange": 6065,
      "directional_balance": 741,
      "dominant_direction": "Arkansas to Louisiana",
      "main_flow": 3403,
      "reverse_flow": 2662,
      "reverse_share_of_main": 0.7823
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 2947,
      "a_to_b_moe_90": 1025,
      "b_to_a": 3107,
      "b_to_a_moe_90": 1288,
      "gross_exchange": 6054,
      "directional_balance": 160,
      "dominant_direction": "Missouri to Iowa",
      "main_flow": 3107,
      "reverse_flow": 2947,
      "reverse_share_of_main": 0.9485
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 1458,
      "a_to_b_moe_90": 978,
      "b_to_a": 4547,
      "b_to_a_moe_90": 3174,
      "gross_exchange": 6005,
      "directional_balance": 3089,
      "dominant_direction": "South Dakota to Nebraska",
      "main_flow": 4547,
      "reverse_flow": 1458,
      "reverse_share_of_main": 0.3207
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 3556,
      "a_to_b_moe_90": 1823,
      "b_to_a": 2449,
      "b_to_a_moe_90": 906,
      "gross_exchange": 6005,
      "directional_balance": 1107,
      "dominant_direction": "Connecticut to Georgia",
      "main_flow": 3556,
      "reverse_flow": 2449,
      "reverse_share_of_main": 0.6887
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 3640,
      "a_to_b_moe_90": 1722,
      "b_to_a": 2312,
      "b_to_a_moe_90": 1373,
      "gross_exchange": 5952,
      "directional_balance": 1328,
      "dominant_direction": "Missouri to Tennessee",
      "main_flow": 3640,
      "reverse_flow": 2312,
      "reverse_share_of_main": 0.6352
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 4335,
      "a_to_b_moe_90": 2185,
      "b_to_a": 1523,
      "b_to_a_moe_90": 875,
      "gross_exchange": 5858,
      "directional_balance": 2812,
      "dominant_direction": "Florida to New Hampshire",
      "main_flow": 4335,
      "reverse_flow": 1523,
      "reverse_share_of_main": 0.3513
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 1167,
      "a_to_b_moe_90": 740,
      "b_to_a": 4681,
      "b_to_a_moe_90": 2029,
      "gross_exchange": 5848,
      "directional_balance": 3514,
      "dominant_direction": "Illinois to Alabama",
      "main_flow": 4681,
      "reverse_flow": 1167,
      "reverse_share_of_main": 0.2493
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 4226,
      "a_to_b_moe_90": 2194,
      "b_to_a": 1591,
      "b_to_a_moe_90": 949,
      "gross_exchange": 5817,
      "directional_balance": 2635,
      "dominant_direction": "Pennsylvania to Tennessee",
      "main_flow": 4226,
      "reverse_flow": 1591,
      "reverse_share_of_main": 0.3765
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 3796,
      "a_to_b_moe_90": 1619,
      "b_to_a": 1981,
      "b_to_a_moe_90": 1046,
      "gross_exchange": 5777,
      "directional_balance": 1815,
      "dominant_direction": "Arkansas to Tennessee",
      "main_flow": 3796,
      "reverse_flow": 1981,
      "reverse_share_of_main": 0.5219
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 2952,
      "a_to_b_moe_90": 1584,
      "b_to_a": 2804,
      "b_to_a_moe_90": 1229,
      "gross_exchange": 5756,
      "directional_balance": 148,
      "dominant_direction": "Colorado to Michigan",
      "main_flow": 2952,
      "reverse_flow": 2804,
      "reverse_share_of_main": 0.9499
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 4726,
      "a_to_b_moe_90": 3172,
      "b_to_a": 1000,
      "b_to_a_moe_90": 856,
      "gross_exchange": 5726,
      "directional_balance": 3726,
      "dominant_direction": "Florida to Nebraska",
      "main_flow": 4726,
      "reverse_flow": 1000,
      "reverse_share_of_main": 0.2116
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 2970,
      "a_to_b_moe_90": 1837,
      "b_to_a": 2755,
      "b_to_a_moe_90": 1210,
      "gross_exchange": 5725,
      "directional_balance": 215,
      "dominant_direction": "Colorado to Minnesota",
      "main_flow": 2970,
      "reverse_flow": 2755,
      "reverse_share_of_main": 0.9276
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 3185,
      "a_to_b_moe_90": 1238,
      "b_to_a": 2469,
      "b_to_a_moe_90": 1263,
      "gross_exchange": 5654,
      "directional_balance": 716,
      "dominant_direction": "Alaska to Washington",
      "main_flow": 3185,
      "reverse_flow": 2469,
      "reverse_share_of_main": 0.7752
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 2858,
      "a_to_b_moe_90": 1866,
      "b_to_a": 2793,
      "b_to_a_moe_90": 1482,
      "gross_exchange": 5651,
      "directional_balance": 65,
      "dominant_direction": "Florida to West Virginia",
      "main_flow": 2858,
      "reverse_flow": 2793,
      "reverse_share_of_main": 0.9773
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 4031,
      "a_to_b_moe_90": 1530,
      "b_to_a": 1580,
      "b_to_a_moe_90": 738,
      "gross_exchange": 5611,
      "directional_balance": 2451,
      "dominant_direction": "Connecticut to Texas",
      "main_flow": 4031,
      "reverse_flow": 1580,
      "reverse_share_of_main": 0.392
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 4500,
      "a_to_b_moe_90": 1934,
      "b_to_a": 1103,
      "b_to_a_moe_90": 522,
      "gross_exchange": 5603,
      "directional_balance": 3397,
      "dominant_direction": "Maryland to Ohio",
      "main_flow": 4500,
      "reverse_flow": 1103,
      "reverse_share_of_main": 0.2451
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 4049,
      "a_to_b_moe_90": 1896,
      "b_to_a": 1515,
      "b_to_a_moe_90": 972,
      "gross_exchange": 5564,
      "directional_balance": 2534,
      "dominant_direction": "Colorado to Nevada",
      "main_flow": 4049,
      "reverse_flow": 1515,
      "reverse_share_of_main": 0.3742
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2862,
      "a_to_b_moe_90": 1724,
      "b_to_a": 2680,
      "b_to_a_moe_90": 1400,
      "gross_exchange": 5542,
      "directional_balance": 182,
      "dominant_direction": "Tennessee to Washington",
      "main_flow": 2862,
      "reverse_flow": 2680,
      "reverse_share_of_main": 0.9364
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2123,
      "a_to_b_moe_90": 1516,
      "b_to_a": 3397,
      "b_to_a_moe_90": 1865,
      "gross_exchange": 5520,
      "directional_balance": 1274,
      "dominant_direction": "Washington to South Carolina",
      "main_flow": 3397,
      "reverse_flow": 2123,
      "reverse_share_of_main": 0.625
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 2911,
      "a_to_b_moe_90": 1276,
      "b_to_a": 2521,
      "b_to_a_moe_90": 1598,
      "gross_exchange": 5432,
      "directional_balance": 390,
      "dominant_direction": "Connecticut to North Carolina",
      "main_flow": 2911,
      "reverse_flow": 2521,
      "reverse_share_of_main": 0.866
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1949,
      "a_to_b_moe_90": 1448,
      "b_to_a": 3451,
      "b_to_a_moe_90": 1686,
      "gross_exchange": 5400,
      "directional_balance": 1502,
      "dominant_direction": "Virginia to Arizona",
      "main_flow": 3451,
      "reverse_flow": 1949,
      "reverse_share_of_main": 0.5648
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1591,
      "a_to_b_moe_90": 839,
      "b_to_a": 3794,
      "b_to_a_moe_90": 1511,
      "gross_exchange": 5385,
      "directional_balance": 2203,
      "dominant_direction": "Pennsylvania to Colorado",
      "main_flow": 3794,
      "reverse_flow": 1591,
      "reverse_share_of_main": 0.4193
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 2640,
      "a_to_b_moe_90": 1262,
      "b_to_a": 2729,
      "b_to_a_moe_90": 1488,
      "gross_exchange": 5369,
      "directional_balance": 89,
      "dominant_direction": "Virginia to Delaware",
      "main_flow": 2729,
      "reverse_flow": 2640,
      "reverse_share_of_main": 0.9674
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 2736,
      "a_to_b_moe_90": 1052,
      "b_to_a": 2614,
      "b_to_a_moe_90": 1801,
      "gross_exchange": 5350,
      "directional_balance": 122,
      "dominant_direction": "Massachusetts to Ohio",
      "main_flow": 2736,
      "reverse_flow": 2614,
      "reverse_share_of_main": 0.9554
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 5147,
      "a_to_b_moe_90": 4031,
      "b_to_a": 201,
      "b_to_a_moe_90": 245,
      "gross_exchange": 5348,
      "directional_balance": 4946,
      "dominant_direction": "Kansas to Minnesota",
      "main_flow": 5147,
      "reverse_flow": 201,
      "reverse_share_of_main": 0.0391
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1710,
      "a_to_b_moe_90": 1176,
      "b_to_a": 3624,
      "b_to_a_moe_90": 1868,
      "gross_exchange": 5334,
      "directional_balance": 1914,
      "dominant_direction": "Utah to North Carolina",
      "main_flow": 3624,
      "reverse_flow": 1710,
      "reverse_share_of_main": 0.4719
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 3620,
      "a_to_b_moe_90": 1498,
      "b_to_a": 1688,
      "b_to_a_moe_90": 1032,
      "gross_exchange": 5308,
      "directional_balance": 1932,
      "dominant_direction": "New York to Rhode Island",
      "main_flow": 3620,
      "reverse_flow": 1688,
      "reverse_share_of_main": 0.4663
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2382,
      "a_to_b_moe_90": 1359,
      "b_to_a": 2925,
      "b_to_a_moe_90": 1394,
      "gross_exchange": 5307,
      "directional_balance": 543,
      "dominant_direction": "Washington to Pennsylvania",
      "main_flow": 2925,
      "reverse_flow": 2382,
      "reverse_share_of_main": 0.8144
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 3359,
      "a_to_b_moe_90": 1766,
      "b_to_a": 1941,
      "b_to_a_moe_90": 1601,
      "gross_exchange": 5300,
      "directional_balance": 1418,
      "dominant_direction": "California to Mississippi",
      "main_flow": 3359,
      "reverse_flow": 1941,
      "reverse_share_of_main": 0.5779
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2885,
      "a_to_b_moe_90": 1274,
      "b_to_a": 2412,
      "b_to_a_moe_90": 1444,
      "gross_exchange": 5297,
      "directional_balance": 473,
      "dominant_direction": "Ohio to Washington",
      "main_flow": 2885,
      "reverse_flow": 2412,
      "reverse_share_of_main": 0.836
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 3440,
      "a_to_b_moe_90": 2647,
      "b_to_a": 1788,
      "b_to_a_moe_90": 971,
      "gross_exchange": 5228,
      "directional_balance": 1652,
      "dominant_direction": "Hawaii to Utah",
      "main_flow": 3440,
      "reverse_flow": 1788,
      "reverse_share_of_main": 0.5198
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 2865,
      "a_to_b_moe_90": 1865,
      "b_to_a": 2337,
      "b_to_a_moe_90": 1000,
      "gross_exchange": 5202,
      "directional_balance": 528,
      "dominant_direction": "Michigan to Minnesota",
      "main_flow": 2865,
      "reverse_flow": 2337,
      "reverse_share_of_main": 0.8157
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 1466,
      "a_to_b_moe_90": 981,
      "b_to_a": 3735,
      "b_to_a_moe_90": 1918,
      "gross_exchange": 5201,
      "directional_balance": 2269,
      "dominant_direction": "Wisconsin to North Carolina",
      "main_flow": 3735,
      "reverse_flow": 1466,
      "reverse_share_of_main": 0.3925
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 2863,
      "a_to_b_moe_90": 1690,
      "b_to_a": 2337,
      "b_to_a_moe_90": 1011,
      "gross_exchange": 5200,
      "directional_balance": 526,
      "dominant_direction": "Florida to Oregon",
      "main_flow": 2863,
      "reverse_flow": 2337,
      "reverse_share_of_main": 0.8163
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2580,
      "a_to_b_moe_90": 1094,
      "b_to_a": 2596,
      "b_to_a_moe_90": 1437,
      "gross_exchange": 5176,
      "directional_balance": 16,
      "dominant_direction": "Washington to North Carolina",
      "main_flow": 2596,
      "reverse_flow": 2580,
      "reverse_share_of_main": 0.9938
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 2861,
      "a_to_b_moe_90": 1936,
      "b_to_a": 2312,
      "b_to_a_moe_90": 982,
      "gross_exchange": 5173,
      "directional_balance": 549,
      "dominant_direction": "Colorado to Massachusetts",
      "main_flow": 2861,
      "reverse_flow": 2312,
      "reverse_share_of_main": 0.8081
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 2357,
      "a_to_b_moe_90": 1547,
      "b_to_a": 2781,
      "b_to_a_moe_90": 1336,
      "gross_exchange": 5138,
      "directional_balance": 424,
      "dominant_direction": "Oregon to Nevada",
      "main_flow": 2781,
      "reverse_flow": 2357,
      "reverse_share_of_main": 0.8475
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 2960,
      "a_to_b_moe_90": 2013,
      "b_to_a": 2159,
      "b_to_a_moe_90": 1077,
      "gross_exchange": 5119,
      "directional_balance": 801,
      "dominant_direction": "Florida to Rhode Island",
      "main_flow": 2960,
      "reverse_flow": 2159,
      "reverse_share_of_main": 0.7294
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 3024,
      "a_to_b_moe_90": 1360,
      "b_to_a": 2071,
      "b_to_a_moe_90": 1829,
      "gross_exchange": 5095,
      "directional_balance": 953,
      "dominant_direction": "Massachusetts to South Carolina",
      "main_flow": 3024,
      "reverse_flow": 2071,
      "reverse_share_of_main": 0.6849
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Arizona",
      "state_b_fips": "04",
      "a_to_b": 3343,
      "a_to_b_moe_90": 3024,
      "b_to_a": 1734,
      "b_to_a_moe_90": 1671,
      "gross_exchange": 5077,
      "directional_balance": 1609,
      "dominant_direction": "Alabama to Arizona",
      "main_flow": 3343,
      "reverse_flow": 1734,
      "reverse_share_of_main": 0.5187
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 698,
      "a_to_b_moe_90": 756,
      "b_to_a": 4362,
      "b_to_a_moe_90": 3309,
      "gross_exchange": 5060,
      "directional_balance": 3664,
      "dominant_direction": "New York to Nebraska",
      "main_flow": 4362,
      "reverse_flow": 698,
      "reverse_share_of_main": 0.16
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 3817,
      "a_to_b_moe_90": 1913,
      "b_to_a": 1234,
      "b_to_a_moe_90": 794,
      "gross_exchange": 5051,
      "directional_balance": 2583,
      "dominant_direction": "Kentucky to Michigan",
      "main_flow": 3817,
      "reverse_flow": 1234,
      "reverse_share_of_main": 0.3233
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 3771,
      "a_to_b_moe_90": 2014,
      "b_to_a": 1258,
      "b_to_a_moe_90": 797,
      "gross_exchange": 5029,
      "directional_balance": 2513,
      "dominant_direction": "California to Nebraska",
      "main_flow": 3771,
      "reverse_flow": 1258,
      "reverse_share_of_main": 0.3336
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 3530,
      "a_to_b_moe_90": 2096,
      "b_to_a": 1492,
      "b_to_a_moe_90": 1062,
      "gross_exchange": 5022,
      "directional_balance": 2038,
      "dominant_direction": "Louisiana to Tennessee",
      "main_flow": 3530,
      "reverse_flow": 1492,
      "reverse_share_of_main": 0.4227
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "California",
      "state_b_fips": "06",
      "a_to_b": 3427,
      "a_to_b_moe_90": 2020,
      "b_to_a": 1560,
      "b_to_a_moe_90": 1070,
      "gross_exchange": 4987,
      "directional_balance": 1867,
      "dominant_direction": "Alaska to California",
      "main_flow": 3427,
      "reverse_flow": 1560,
      "reverse_share_of_main": 0.4552
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 2105,
      "a_to_b_moe_90": 1340,
      "b_to_a": 2882,
      "b_to_a_moe_90": 2254,
      "gross_exchange": 4987,
      "directional_balance": 777,
      "dominant_direction": "Ohio to Alabama",
      "main_flow": 2882,
      "reverse_flow": 2105,
      "reverse_share_of_main": 0.7304
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 2622,
      "a_to_b_moe_90": 1455,
      "b_to_a": 2352,
      "b_to_a_moe_90": 941,
      "gross_exchange": 4974,
      "directional_balance": 270,
      "dominant_direction": "Maryland to West Virginia",
      "main_flow": 2622,
      "reverse_flow": 2352,
      "reverse_share_of_main": 0.897
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 2789,
      "a_to_b_moe_90": 1736,
      "b_to_a": 2182,
      "b_to_a_moe_90": 1368,
      "gross_exchange": 4971,
      "directional_balance": 607,
      "dominant_direction": "Georgia to Nevada",
      "main_flow": 2789,
      "reverse_flow": 2182,
      "reverse_share_of_main": 0.7824
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 2749,
      "a_to_b_moe_90": 1443,
      "b_to_a": 2197,
      "b_to_a_moe_90": 1506,
      "gross_exchange": 4946,
      "directional_balance": 552,
      "dominant_direction": "Idaho to Texas",
      "main_flow": 2749,
      "reverse_flow": 2197,
      "reverse_share_of_main": 0.7992
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 2722,
      "a_to_b_moe_90": 1329,
      "b_to_a": 2224,
      "b_to_a_moe_90": 899,
      "gross_exchange": 4946,
      "directional_balance": 498,
      "dominant_direction": "Illinois to Kentucky",
      "main_flow": 2722,
      "reverse_flow": 2224,
      "reverse_share_of_main": 0.817
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 1346,
      "a_to_b_moe_90": 1101,
      "b_to_a": 3597,
      "b_to_a_moe_90": 1396,
      "gross_exchange": 4943,
      "directional_balance": 2251,
      "dominant_direction": "New Hampshire to Connecticut",
      "main_flow": 3597,
      "reverse_flow": 1346,
      "reverse_share_of_main": 0.3742
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 3083,
      "a_to_b_moe_90": 1401,
      "b_to_a": 1835,
      "b_to_a_moe_90": 1119,
      "gross_exchange": 4918,
      "directional_balance": 1248,
      "dominant_direction": "Colorado to Maryland",
      "main_flow": 3083,
      "reverse_flow": 1835,
      "reverse_share_of_main": 0.5952
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 3666,
      "a_to_b_moe_90": 1611,
      "b_to_a": 1246,
      "b_to_a_moe_90": 815,
      "gross_exchange": 4912,
      "directional_balance": 2420,
      "dominant_direction": "Maryland to Washington",
      "main_flow": 3666,
      "reverse_flow": 1246,
      "reverse_share_of_main": 0.3399
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 2196,
      "a_to_b_moe_90": 1704,
      "b_to_a": 2695,
      "b_to_a_moe_90": 1740,
      "gross_exchange": 4891,
      "directional_balance": 499,
      "dominant_direction": "Kansas to Georgia",
      "main_flow": 2695,
      "reverse_flow": 2196,
      "reverse_share_of_main": 0.8148
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 1565,
      "a_to_b_moe_90": 827,
      "b_to_a": 3281,
      "b_to_a_moe_90": 1665,
      "gross_exchange": 4846,
      "directional_balance": 1716,
      "dominant_direction": "New York to Indiana",
      "main_flow": 3281,
      "reverse_flow": 1565,
      "reverse_share_of_main": 0.477
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 3051,
      "a_to_b_moe_90": 1628,
      "b_to_a": 1723,
      "b_to_a_moe_90": 942,
      "gross_exchange": 4774,
      "directional_balance": 1328,
      "dominant_direction": "Michigan to Virginia",
      "main_flow": 3051,
      "reverse_flow": 1723,
      "reverse_share_of_main": 0.5647
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 2031,
      "a_to_b_moe_90": 1327,
      "b_to_a": 2724,
      "b_to_a_moe_90": 1546,
      "gross_exchange": 4755,
      "directional_balance": 693,
      "dominant_direction": "New York to Missouri",
      "main_flow": 2724,
      "reverse_flow": 2031,
      "reverse_share_of_main": 0.7456
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1422,
      "a_to_b_moe_90": 1001,
      "b_to_a": 3309,
      "b_to_a_moe_90": 3551,
      "gross_exchange": 4731,
      "directional_balance": 1887,
      "dominant_direction": "Utah to Oklahoma",
      "main_flow": 3309,
      "reverse_flow": 1422,
      "reverse_share_of_main": 0.4297
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 3908,
      "a_to_b_moe_90": 4535,
      "b_to_a": 754,
      "b_to_a_moe_90": 996,
      "gross_exchange": 4662,
      "directional_balance": 3154,
      "dominant_direction": "Minnesota to Utah",
      "main_flow": 3908,
      "reverse_flow": 754,
      "reverse_share_of_main": 0.1929
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Florida",
      "state_b_fips": "12",
      "a_to_b": 2836,
      "a_to_b_moe_90": 2046,
      "b_to_a": 1826,
      "b_to_a_moe_90": 1534,
      "gross_exchange": 4662,
      "directional_balance": 1010,
      "dominant_direction": "Alaska to Florida",
      "main_flow": 2836,
      "reverse_flow": 1826,
      "reverse_share_of_main": 0.6439
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 3711,
      "a_to_b_moe_90": 1448,
      "b_to_a": 917,
      "b_to_a_moe_90": 653,
      "gross_exchange": 4628,
      "directional_balance": 2794,
      "dominant_direction": "Missouri to Virginia",
      "main_flow": 3711,
      "reverse_flow": 917,
      "reverse_share_of_main": 0.2471
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 2711,
      "a_to_b_moe_90": 1432,
      "b_to_a": 1888,
      "b_to_a_moe_90": 1144,
      "gross_exchange": 4599,
      "directional_balance": 823,
      "dominant_direction": "Maryland to Michigan",
      "main_flow": 2711,
      "reverse_flow": 1888,
      "reverse_share_of_main": 0.6964
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 2730,
      "a_to_b_moe_90": 1418,
      "b_to_a": 1852,
      "b_to_a_moe_90": 1045,
      "gross_exchange": 4582,
      "directional_balance": 878,
      "dominant_direction": "Massachusetts to Tennessee",
      "main_flow": 2730,
      "reverse_flow": 1852,
      "reverse_share_of_main": 0.6784
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 2264,
      "a_to_b_moe_90": 1250,
      "b_to_a": 2270,
      "b_to_a_moe_90": 1432,
      "gross_exchange": 4534,
      "directional_balance": 6,
      "dominant_direction": "New Mexico to Florida",
      "main_flow": 2270,
      "reverse_flow": 2264,
      "reverse_share_of_main": 0.9974
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1419,
      "a_to_b_moe_90": 814,
      "b_to_a": 3055,
      "b_to_a_moe_90": 1835,
      "gross_exchange": 4474,
      "directional_balance": 1636,
      "dominant_direction": "South Carolina to Arizona",
      "main_flow": 3055,
      "reverse_flow": 1419,
      "reverse_share_of_main": 0.4645
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 2597,
      "a_to_b_moe_90": 933,
      "b_to_a": 1863,
      "b_to_a_moe_90": 1051,
      "gross_exchange": 4460,
      "directional_balance": 734,
      "dominant_direction": "New Jersey to South Carolina",
      "main_flow": 2597,
      "reverse_flow": 1863,
      "reverse_share_of_main": 0.7174
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 2654,
      "a_to_b_moe_90": 953,
      "b_to_a": 1797,
      "b_to_a_moe_90": 720,
      "gross_exchange": 4451,
      "directional_balance": 857,
      "dominant_direction": "Connecticut to Rhode Island",
      "main_flow": 2654,
      "reverse_flow": 1797,
      "reverse_share_of_main": 0.6771
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Colorado",
      "state_b_fips": "08",
      "a_to_b": 1838,
      "a_to_b_moe_90": 769,
      "b_to_a": 2608,
      "b_to_a_moe_90": 1862,
      "gross_exchange": 4446,
      "directional_balance": 770,
      "dominant_direction": "Colorado to Alabama",
      "main_flow": 2608,
      "reverse_flow": 1838,
      "reverse_share_of_main": 0.7048
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 2781,
      "a_to_b_moe_90": 1579,
      "b_to_a": 1653,
      "b_to_a_moe_90": 892,
      "gross_exchange": 4434,
      "directional_balance": 1128,
      "dominant_direction": "Hawaii to New York",
      "main_flow": 2781,
      "reverse_flow": 1653,
      "reverse_share_of_main": 0.5944
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 2526,
      "a_to_b_moe_90": 1574,
      "b_to_a": 1862,
      "b_to_a_moe_90": 989,
      "gross_exchange": 4388,
      "directional_balance": 664,
      "dominant_direction": "Colorado to Idaho",
      "main_flow": 2526,
      "reverse_flow": 1862,
      "reverse_share_of_main": 0.7371
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 1768,
      "a_to_b_moe_90": 1039,
      "b_to_a": 2605,
      "b_to_a_moe_90": 948,
      "gross_exchange": 4373,
      "directional_balance": 837,
      "dominant_direction": "Louisiana to Alabama",
      "main_flow": 2605,
      "reverse_flow": 1768,
      "reverse_share_of_main": 0.6787
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 1552,
      "a_to_b_moe_90": 792,
      "b_to_a": 2811,
      "b_to_a_moe_90": 2493,
      "gross_exchange": 4363,
      "directional_balance": 1259,
      "dominant_direction": "New Jersey to Michigan",
      "main_flow": 2811,
      "reverse_flow": 1552,
      "reverse_share_of_main": 0.5521
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 3640,
      "a_to_b_moe_90": 1819,
      "b_to_a": 721,
      "b_to_a_moe_90": 444,
      "gross_exchange": 4361,
      "directional_balance": 2919,
      "dominant_direction": "Colorado to South Carolina",
      "main_flow": 3640,
      "reverse_flow": 721,
      "reverse_share_of_main": 0.1981
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 2815,
      "a_to_b_moe_90": 1950,
      "b_to_a": 1519,
      "b_to_a_moe_90": 1245,
      "gross_exchange": 4334,
      "directional_balance": 1296,
      "dominant_direction": "Maine to North Carolina",
      "main_flow": 2815,
      "reverse_flow": 1519,
      "reverse_share_of_main": 0.5396
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1401,
      "a_to_b_moe_90": 887,
      "b_to_a": 2928,
      "b_to_a_moe_90": 1432,
      "gross_exchange": 4329,
      "directional_balance": 1527,
      "dominant_direction": "Pennsylvania to Arizona",
      "main_flow": 2928,
      "reverse_flow": 1401,
      "reverse_share_of_main": 0.4785
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Colorado",
      "state_b_fips": "08",
      "a_to_b": 3993,
      "a_to_b_moe_90": 1774,
      "b_to_a": 311,
      "b_to_a_moe_90": 256,
      "gross_exchange": 4304,
      "directional_balance": 3682,
      "dominant_direction": "Alaska to Colorado",
      "main_flow": 3993,
      "reverse_flow": 311,
      "reverse_share_of_main": 0.0779
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 2323,
      "a_to_b_moe_90": 1401,
      "b_to_a": 1973,
      "b_to_a_moe_90": 1898,
      "gross_exchange": 4296,
      "directional_balance": 350,
      "dominant_direction": "Minnesota to Tennessee",
      "main_flow": 2323,
      "reverse_flow": 1973,
      "reverse_share_of_main": 0.8493
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 3611,
      "a_to_b_moe_90": 2245,
      "b_to_a": 673,
      "b_to_a_moe_90": 940,
      "gross_exchange": 4284,
      "directional_balance": 2938,
      "dominant_direction": "Iowa to Pennsylvania",
      "main_flow": 3611,
      "reverse_flow": 673,
      "reverse_share_of_main": 0.1864
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 1838,
      "a_to_b_moe_90": 1084,
      "b_to_a": 2417,
      "b_to_a_moe_90": 1523,
      "gross_exchange": 4255,
      "directional_balance": 579,
      "dominant_direction": "New Jersey to Arizona",
      "main_flow": 2417,
      "reverse_flow": 1838,
      "reverse_share_of_main": 0.7604
    },
    {
      "state_a": "South Dakota",
      "state_a_fips": "46",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 2619,
      "a_to_b_moe_90": 2230,
      "b_to_a": 1590,
      "b_to_a_moe_90": 943,
      "gross_exchange": 4209,
      "directional_balance": 1029,
      "dominant_direction": "South Dakota to Texas",
      "main_flow": 2619,
      "reverse_flow": 1590,
      "reverse_share_of_main": 0.6071
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 2223,
      "a_to_b_moe_90": 1447,
      "b_to_a": 1970,
      "b_to_a_moe_90": 1129,
      "gross_exchange": 4193,
      "directional_balance": 253,
      "dominant_direction": "Alabama to South Carolina",
      "main_flow": 2223,
      "reverse_flow": 1970,
      "reverse_share_of_main": 0.8862
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 1227,
      "a_to_b_moe_90": 837,
      "b_to_a": 2942,
      "b_to_a_moe_90": 2883,
      "gross_exchange": 4169,
      "directional_balance": 1715,
      "dominant_direction": "Missouri to Louisiana",
      "main_flow": 2942,
      "reverse_flow": 1227,
      "reverse_share_of_main": 0.4171
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 3671,
      "a_to_b_moe_90": 2750,
      "b_to_a": 482,
      "b_to_a_moe_90": 435,
      "gross_exchange": 4153,
      "directional_balance": 3189,
      "dominant_direction": "Arizona to Kansas",
      "main_flow": 3671,
      "reverse_flow": 482,
      "reverse_share_of_main": 0.1313
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 2830,
      "a_to_b_moe_90": 1336,
      "b_to_a": 1323,
      "b_to_a_moe_90": 826,
      "gross_exchange": 4153,
      "directional_balance": 1507,
      "dominant_direction": "Alaska to Texas",
      "main_flow": 2830,
      "reverse_flow": 1323,
      "reverse_share_of_main": 0.4675
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 1435,
      "a_to_b_moe_90": 869,
      "b_to_a": 2705,
      "b_to_a_moe_90": 1417,
      "gross_exchange": 4140,
      "directional_balance": 1270,
      "dominant_direction": "New York to Nevada",
      "main_flow": 2705,
      "reverse_flow": 1435,
      "reverse_share_of_main": 0.5305
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 3106,
      "a_to_b_moe_90": 2418,
      "b_to_a": 1032,
      "b_to_a_moe_90": 825,
      "gross_exchange": 4138,
      "directional_balance": 2074,
      "dominant_direction": "Michigan to Missouri",
      "main_flow": 3106,
      "reverse_flow": 1032,
      "reverse_share_of_main": 0.3323
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 2004,
      "a_to_b_moe_90": 1026,
      "b_to_a": 2129,
      "b_to_a_moe_90": 1494,
      "gross_exchange": 4133,
      "directional_balance": 125,
      "dominant_direction": "Oregon to North Carolina",
      "main_flow": 2129,
      "reverse_flow": 2004,
      "reverse_share_of_main": 0.9413
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2620,
      "a_to_b_moe_90": 2387,
      "b_to_a": 1511,
      "b_to_a_moe_90": 912,
      "gross_exchange": 4131,
      "directional_balance": 1109,
      "dominant_direction": "New Mexico to Washington",
      "main_flow": 2620,
      "reverse_flow": 1511,
      "reverse_share_of_main": 0.5767
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 2719,
      "a_to_b_moe_90": 1460,
      "b_to_a": 1402,
      "b_to_a_moe_90": 1094,
      "gross_exchange": 4121,
      "directional_balance": 1317,
      "dominant_direction": "Hawaii to Nevada",
      "main_flow": 2719,
      "reverse_flow": 1402,
      "reverse_share_of_main": 0.5156
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 2087,
      "a_to_b_moe_90": 1811,
      "b_to_a": 2016,
      "b_to_a_moe_90": 1465,
      "gross_exchange": 4103,
      "directional_balance": 71,
      "dominant_direction": "Pennsylvania to Wisconsin",
      "main_flow": 2087,
      "reverse_flow": 2016,
      "reverse_share_of_main": 0.966
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 1022,
      "a_to_b_moe_90": 949,
      "b_to_a": 3056,
      "b_to_a_moe_90": 2052,
      "gross_exchange": 4078,
      "directional_balance": 2034,
      "dominant_direction": "Wisconsin to Georgia",
      "main_flow": 3056,
      "reverse_flow": 1022,
      "reverse_share_of_main": 0.3344
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 2052,
      "a_to_b_moe_90": 1291,
      "b_to_a": 1981,
      "b_to_a_moe_90": 1195,
      "gross_exchange": 4033,
      "directional_balance": 71,
      "dominant_direction": "Indiana to Minnesota",
      "main_flow": 2052,
      "reverse_flow": 1981,
      "reverse_share_of_main": 0.9654
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 2883,
      "a_to_b_moe_90": 1420,
      "b_to_a": 1142,
      "b_to_a_moe_90": 800,
      "gross_exchange": 4025,
      "directional_balance": 1741,
      "dominant_direction": "North Carolina to West Virginia",
      "main_flow": 2883,
      "reverse_flow": 1142,
      "reverse_share_of_main": 0.3961
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 1335,
      "a_to_b_moe_90": 1053,
      "b_to_a": 2685,
      "b_to_a_moe_90": 1202,
      "gross_exchange": 4020,
      "directional_balance": 1350,
      "dominant_direction": "Nebraska to Missouri",
      "main_flow": 2685,
      "reverse_flow": 1335,
      "reverse_share_of_main": 0.4972
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 954,
      "a_to_b_moe_90": 688,
      "b_to_a": 3054,
      "b_to_a_moe_90": 2138,
      "gross_exchange": 4008,
      "directional_balance": 2100,
      "dominant_direction": "West Virginia to Kentucky",
      "main_flow": 3054,
      "reverse_flow": 954,
      "reverse_share_of_main": 0.3124
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 2189,
      "a_to_b_moe_90": 1126,
      "b_to_a": 1817,
      "b_to_a_moe_90": 913,
      "gross_exchange": 4006,
      "directional_balance": 372,
      "dominant_direction": "Missouri to Ohio",
      "main_flow": 2189,
      "reverse_flow": 1817,
      "reverse_share_of_main": 0.8301
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 2699,
      "a_to_b_moe_90": 2074,
      "b_to_a": 1300,
      "b_to_a_moe_90": 593,
      "gross_exchange": 3999,
      "directional_balance": 1399,
      "dominant_direction": "Connecticut to Illinois",
      "main_flow": 2699,
      "reverse_flow": 1300,
      "reverse_share_of_main": 0.4817
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 126,
      "a_to_b_moe_90": 162,
      "b_to_a": 3856,
      "b_to_a_moe_90": 3908,
      "gross_exchange": 3982,
      "directional_balance": 3730,
      "dominant_direction": "New York to Alabama",
      "main_flow": 3856,
      "reverse_flow": 126,
      "reverse_share_of_main": 0.0327
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 1576,
      "a_to_b_moe_90": 1430,
      "b_to_a": 2376,
      "b_to_a_moe_90": 1110,
      "gross_exchange": 3952,
      "directional_balance": 800,
      "dominant_direction": "Iowa to Colorado",
      "main_flow": 2376,
      "reverse_flow": 1576,
      "reverse_share_of_main": 0.6633
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 2601,
      "a_to_b_moe_90": 2383,
      "b_to_a": 1337,
      "b_to_a_moe_90": 1068,
      "gross_exchange": 3938,
      "directional_balance": 1264,
      "dominant_direction": "Georgia to West Virginia",
      "main_flow": 2601,
      "reverse_flow": 1337,
      "reverse_share_of_main": 0.514
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 465,
      "a_to_b_moe_90": 538,
      "b_to_a": 3445,
      "b_to_a_moe_90": 2444,
      "gross_exchange": 3910,
      "directional_balance": 2980,
      "dominant_direction": "New Jersey to Alabama",
      "main_flow": 3445,
      "reverse_flow": 465,
      "reverse_share_of_main": 0.135
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 3210,
      "a_to_b_moe_90": 1854,
      "b_to_a": 691,
      "b_to_a_moe_90": 539,
      "gross_exchange": 3901,
      "directional_balance": 2519,
      "dominant_direction": "Montana to Oregon",
      "main_flow": 3210,
      "reverse_flow": 691,
      "reverse_share_of_main": 0.2153
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 2724,
      "a_to_b_moe_90": 1950,
      "b_to_a": 1176,
      "b_to_a_moe_90": 911,
      "gross_exchange": 3900,
      "directional_balance": 1548,
      "dominant_direction": "New York to Oklahoma",
      "main_flow": 2724,
      "reverse_flow": 1176,
      "reverse_share_of_main": 0.4317
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 1506,
      "a_to_b_moe_90": 933,
      "b_to_a": 2391,
      "b_to_a_moe_90": 1521,
      "gross_exchange": 3897,
      "directional_balance": 885,
      "dominant_direction": "New York to Minnesota",
      "main_flow": 2391,
      "reverse_flow": 1506,
      "reverse_share_of_main": 0.6299
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1911,
      "a_to_b_moe_90": 936,
      "b_to_a": 1975,
      "b_to_a_moe_90": 1061,
      "gross_exchange": 3886,
      "directional_balance": 64,
      "dominant_direction": "Washington to Missouri",
      "main_flow": 1975,
      "reverse_flow": 1911,
      "reverse_share_of_main": 0.9676
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 906,
      "a_to_b_moe_90": 545,
      "b_to_a": 2950,
      "b_to_a_moe_90": 2780,
      "gross_exchange": 3856,
      "directional_balance": 2044,
      "dominant_direction": "Kansas to Iowa",
      "main_flow": 2950,
      "reverse_flow": 906,
      "reverse_share_of_main": 0.3071
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1573,
      "a_to_b_moe_90": 1031,
      "b_to_a": 2265,
      "b_to_a_moe_90": 1748,
      "gross_exchange": 3838,
      "directional_balance": 692,
      "dominant_direction": "Washington to Alabama",
      "main_flow": 2265,
      "reverse_flow": 1573,
      "reverse_share_of_main": 0.6945
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1686,
      "a_to_b_moe_90": 871,
      "b_to_a": 2145,
      "b_to_a_moe_90": 1190,
      "gross_exchange": 3831,
      "directional_balance": 459,
      "dominant_direction": "Tennessee to Arizona",
      "main_flow": 2145,
      "reverse_flow": 1686,
      "reverse_share_of_main": 0.786
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 2374,
      "a_to_b_moe_90": 1536,
      "b_to_a": 1450,
      "b_to_a_moe_90": 899,
      "gross_exchange": 3824,
      "directional_balance": 924,
      "dominant_direction": "Ohio to Oregon",
      "main_flow": 2374,
      "reverse_flow": 1450,
      "reverse_share_of_main": 0.6108
    },
    {
      "state_a": "Washington",
      "state_a_fips": "53",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 2185,
      "a_to_b_moe_90": 1432,
      "b_to_a": 1630,
      "b_to_a_moe_90": 795,
      "gross_exchange": 3815,
      "directional_balance": 555,
      "dominant_direction": "Washington to Wisconsin",
      "main_flow": 2185,
      "reverse_flow": 1630,
      "reverse_share_of_main": 0.746
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2395,
      "a_to_b_moe_90": 1304,
      "b_to_a": 1397,
      "b_to_a_moe_90": 573,
      "gross_exchange": 3792,
      "directional_balance": 998,
      "dominant_direction": "Massachusetts to Washington",
      "main_flow": 2395,
      "reverse_flow": 1397,
      "reverse_share_of_main": 0.5833
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 2327,
      "a_to_b_moe_90": 1640,
      "b_to_a": 1410,
      "b_to_a_moe_90": 1038,
      "gross_exchange": 3737,
      "directional_balance": 917,
      "dominant_direction": "North Carolina to Rhode Island",
      "main_flow": 2327,
      "reverse_flow": 1410,
      "reverse_share_of_main": 0.6059
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 1366,
      "a_to_b_moe_90": 1092,
      "b_to_a": 2366,
      "b_to_a_moe_90": 1339,
      "gross_exchange": 3732,
      "directional_balance": 1000,
      "dominant_direction": "Louisiana to Illinois",
      "main_flow": 2366,
      "reverse_flow": 1366,
      "reverse_share_of_main": 0.5773
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 1657,
      "a_to_b_moe_90": 889,
      "b_to_a": 2065,
      "b_to_a_moe_90": 1463,
      "gross_exchange": 3722,
      "directional_balance": 408,
      "dominant_direction": "North Carolina to Minnesota",
      "main_flow": 2065,
      "reverse_flow": 1657,
      "reverse_share_of_main": 0.8024
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 2059,
      "a_to_b_moe_90": 1546,
      "b_to_a": 1638,
      "b_to_a_moe_90": 1160,
      "gross_exchange": 3697,
      "directional_balance": 421,
      "dominant_direction": "Ohio to Utah",
      "main_flow": 2059,
      "reverse_flow": 1638,
      "reverse_share_of_main": 0.7955
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 2066,
      "a_to_b_moe_90": 1120,
      "b_to_a": 1625,
      "b_to_a_moe_90": 1071,
      "gross_exchange": 3691,
      "directional_balance": 441,
      "dominant_direction": "Missouri to Wisconsin",
      "main_flow": 2066,
      "reverse_flow": 1625,
      "reverse_share_of_main": 0.7865
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 2436,
      "a_to_b_moe_90": 1251,
      "b_to_a": 1252,
      "b_to_a_moe_90": 885,
      "gross_exchange": 3688,
      "directional_balance": 1184,
      "dominant_direction": "Illinois to Nevada",
      "main_flow": 2436,
      "reverse_flow": 1252,
      "reverse_share_of_main": 0.514
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 2990,
      "a_to_b_moe_90": 1160,
      "b_to_a": 679,
      "b_to_a_moe_90": 579,
      "gross_exchange": 3669,
      "directional_balance": 2311,
      "dominant_direction": "Connecticut to Virginia",
      "main_flow": 2990,
      "reverse_flow": 679,
      "reverse_share_of_main": 0.2271
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 2162,
      "a_to_b_moe_90": 1443,
      "b_to_a": 1507,
      "b_to_a_moe_90": 845,
      "gross_exchange": 3669,
      "directional_balance": 655,
      "dominant_direction": "District of Columbia to Texas",
      "main_flow": 2162,
      "reverse_flow": 1507,
      "reverse_share_of_main": 0.697
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 2624,
      "a_to_b_moe_90": 1819,
      "b_to_a": 1036,
      "b_to_a_moe_90": 703,
      "gross_exchange": 3660,
      "directional_balance": 1588,
      "dominant_direction": "Alabama to Pennsylvania",
      "main_flow": 2624,
      "reverse_flow": 1036,
      "reverse_share_of_main": 0.3948
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "California",
      "state_b_fips": "06",
      "a_to_b": 2052,
      "a_to_b_moe_90": 1165,
      "b_to_a": 1606,
      "b_to_a_moe_90": 1114,
      "gross_exchange": 3658,
      "directional_balance": 446,
      "dominant_direction": "Arkansas to California",
      "main_flow": 2052,
      "reverse_flow": 1606,
      "reverse_share_of_main": 0.7827
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 2201,
      "a_to_b_moe_90": 2080,
      "b_to_a": 1448,
      "b_to_a_moe_90": 773,
      "gross_exchange": 3649,
      "directional_balance": 753,
      "dominant_direction": "District of Columbia to North Carolina",
      "main_flow": 2201,
      "reverse_flow": 1448,
      "reverse_share_of_main": 0.6579
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 825,
      "a_to_b_moe_90": 545,
      "b_to_a": 2822,
      "b_to_a_moe_90": 1771,
      "gross_exchange": 3647,
      "directional_balance": 1997,
      "dominant_direction": "Illinois to District of Columbia",
      "main_flow": 2822,
      "reverse_flow": 825,
      "reverse_share_of_main": 0.2923
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Florida",
      "state_b_fips": "12",
      "a_to_b": 1539,
      "a_to_b_moe_90": 1041,
      "b_to_a": 2097,
      "b_to_a_moe_90": 2054,
      "gross_exchange": 3636,
      "directional_balance": 558,
      "dominant_direction": "Florida to Delaware",
      "main_flow": 2097,
      "reverse_flow": 1539,
      "reverse_share_of_main": 0.7339
    },
    {
      "state_a": "Utah",
      "state_a_fips": "49",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1449,
      "a_to_b_moe_90": 902,
      "b_to_a": 2183,
      "b_to_a_moe_90": 1324,
      "gross_exchange": 3632,
      "directional_balance": 734,
      "dominant_direction": "Virginia to Utah",
      "main_flow": 2183,
      "reverse_flow": 1449,
      "reverse_share_of_main": 0.6638
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1109,
      "a_to_b_moe_90": 778,
      "b_to_a": 2508,
      "b_to_a_moe_90": 1682,
      "gross_exchange": 3617,
      "directional_balance": 1399,
      "dominant_direction": "Tennessee to Kansas",
      "main_flow": 2508,
      "reverse_flow": 1109,
      "reverse_share_of_main": 0.4422
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2113,
      "a_to_b_moe_90": 1245,
      "b_to_a": 1483,
      "b_to_a_moe_90": 701,
      "gross_exchange": 3596,
      "directional_balance": 630,
      "dominant_direction": "Indiana to Washington",
      "main_flow": 2113,
      "reverse_flow": 1483,
      "reverse_share_of_main": 0.7018
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 2124,
      "a_to_b_moe_90": 1042,
      "b_to_a": 1471,
      "b_to_a_moe_90": 814,
      "gross_exchange": 3595,
      "directional_balance": 653,
      "dominant_direction": "New York to Wisconsin",
      "main_flow": 2124,
      "reverse_flow": 1471,
      "reverse_share_of_main": 0.6926
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1750,
      "a_to_b_moe_90": 1150,
      "b_to_a": 1835,
      "b_to_a_moe_90": 1155,
      "gross_exchange": 3585,
      "directional_balance": 85,
      "dominant_direction": "Oregon to New York",
      "main_flow": 1835,
      "reverse_flow": 1750,
      "reverse_share_of_main": 0.9537
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 1984,
      "a_to_b_moe_90": 1185,
      "b_to_a": 1594,
      "b_to_a_moe_90": 929,
      "gross_exchange": 3578,
      "directional_balance": 390,
      "dominant_direction": "Colorado to Kentucky",
      "main_flow": 1984,
      "reverse_flow": 1594,
      "reverse_share_of_main": 0.8034
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2492,
      "a_to_b_moe_90": 2408,
      "b_to_a": 1080,
      "b_to_a_moe_90": 587,
      "gross_exchange": 3572,
      "directional_balance": 1412,
      "dominant_direction": "Kentucky to Washington",
      "main_flow": 2492,
      "reverse_flow": 1080,
      "reverse_share_of_main": 0.4334
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1378,
      "a_to_b_moe_90": 748,
      "b_to_a": 2191,
      "b_to_a_moe_90": 1109,
      "gross_exchange": 3569,
      "directional_balance": 813,
      "dominant_direction": "Pennsylvania to Michigan",
      "main_flow": 2191,
      "reverse_flow": 1378,
      "reverse_share_of_main": 0.6289
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 1013,
      "a_to_b_moe_90": 803,
      "b_to_a": 2543,
      "b_to_a_moe_90": 1972,
      "gross_exchange": 3556,
      "directional_balance": 1530,
      "dominant_direction": "North Carolina to Hawaii",
      "main_flow": 2543,
      "reverse_flow": 1013,
      "reverse_share_of_main": 0.3983
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 1552,
      "a_to_b_moe_90": 905,
      "b_to_a": 1981,
      "b_to_a_moe_90": 953,
      "gross_exchange": 3533,
      "directional_balance": 429,
      "dominant_direction": "Wisconsin to Colorado",
      "main_flow": 1981,
      "reverse_flow": 1552,
      "reverse_share_of_main": 0.7834
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 3021,
      "a_to_b_moe_90": 2677,
      "b_to_a": 507,
      "b_to_a_moe_90": 887,
      "gross_exchange": 3528,
      "directional_balance": 2514,
      "dominant_direction": "New Jersey to Oregon",
      "main_flow": 3021,
      "reverse_flow": 507,
      "reverse_share_of_main": 0.1678
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 838,
      "a_to_b_moe_90": 600,
      "b_to_a": 2675,
      "b_to_a_moe_90": 1116,
      "gross_exchange": 3513,
      "directional_balance": 1837,
      "dominant_direction": "Kentucky to Alabama",
      "main_flow": 2675,
      "reverse_flow": 838,
      "reverse_share_of_main": 0.3133
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 638,
      "a_to_b_moe_90": 496,
      "b_to_a": 2872,
      "b_to_a_moe_90": 999,
      "gross_exchange": 3510,
      "directional_balance": 2234,
      "dominant_direction": "Utah to South Carolina",
      "main_flow": 2872,
      "reverse_flow": 638,
      "reverse_share_of_main": 0.2221
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 1828,
      "a_to_b_moe_90": 1158,
      "b_to_a": 1669,
      "b_to_a_moe_90": 1037,
      "gross_exchange": 3497,
      "directional_balance": 159,
      "dominant_direction": "Florida to Iowa",
      "main_flow": 1828,
      "reverse_flow": 1669,
      "reverse_share_of_main": 0.913
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 1622,
      "a_to_b_moe_90": 1227,
      "b_to_a": 1858,
      "b_to_a_moe_90": 1143,
      "gross_exchange": 3480,
      "directional_balance": 236,
      "dominant_direction": "New York to Louisiana",
      "main_flow": 1858,
      "reverse_flow": 1622,
      "reverse_share_of_main": 0.873
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 2974,
      "a_to_b_moe_90": 1266,
      "b_to_a": 502,
      "b_to_a_moe_90": 398,
      "gross_exchange": 3476,
      "directional_balance": 2472,
      "dominant_direction": "Texas to West Virginia",
      "main_flow": 2974,
      "reverse_flow": 502,
      "reverse_share_of_main": 0.1688
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 2258,
      "a_to_b_moe_90": 1792,
      "b_to_a": 1216,
      "b_to_a_moe_90": 749,
      "gross_exchange": 3474,
      "directional_balance": 1042,
      "dominant_direction": "New York to Utah",
      "main_flow": 2258,
      "reverse_flow": 1216,
      "reverse_share_of_main": 0.5385
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 2183,
      "a_to_b_moe_90": 1153,
      "b_to_a": 1291,
      "b_to_a_moe_90": 1035,
      "gross_exchange": 3474,
      "directional_balance": 892,
      "dominant_direction": "Minnesota to Missouri",
      "main_flow": 2183,
      "reverse_flow": 1291,
      "reverse_share_of_main": 0.5914
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 1595,
      "a_to_b_moe_90": 1002,
      "b_to_a": 1871,
      "b_to_a_moe_90": 1165,
      "gross_exchange": 3466,
      "directional_balance": 276,
      "dominant_direction": "North Carolina to Kansas",
      "main_flow": 1871,
      "reverse_flow": 1595,
      "reverse_share_of_main": 0.8525
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 2366,
      "a_to_b_moe_90": 1496,
      "b_to_a": 1088,
      "b_to_a_moe_90": 589,
      "gross_exchange": 3454,
      "directional_balance": 1278,
      "dominant_direction": "New Mexico to Oregon",
      "main_flow": 2366,
      "reverse_flow": 1088,
      "reverse_share_of_main": 0.4598
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 1482,
      "a_to_b_moe_90": 1125,
      "b_to_a": 1964,
      "b_to_a_moe_90": 1250,
      "gross_exchange": 3446,
      "directional_balance": 482,
      "dominant_direction": "Wyoming to Florida",
      "main_flow": 1964,
      "reverse_flow": 1482,
      "reverse_share_of_main": 0.7546
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 1203,
      "a_to_b_moe_90": 745,
      "b_to_a": 2239,
      "b_to_a_moe_90": 1197,
      "gross_exchange": 3442,
      "directional_balance": 1036,
      "dominant_direction": "Texas to Montana",
      "main_flow": 2239,
      "reverse_flow": 1203,
      "reverse_share_of_main": 0.5373
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 1997,
      "a_to_b_moe_90": 1224,
      "b_to_a": 1444,
      "b_to_a_moe_90": 1005,
      "gross_exchange": 3441,
      "directional_balance": 553,
      "dominant_direction": "California to Rhode Island",
      "main_flow": 1997,
      "reverse_flow": 1444,
      "reverse_share_of_main": 0.7231
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1450,
      "a_to_b_moe_90": 1325,
      "b_to_a": 1956,
      "b_to_a_moe_90": 1375,
      "gross_exchange": 3406,
      "directional_balance": 506,
      "dominant_direction": "Washington to Kansas",
      "main_flow": 1956,
      "reverse_flow": 1450,
      "reverse_share_of_main": 0.7413
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1284,
      "a_to_b_moe_90": 894,
      "b_to_a": 2116,
      "b_to_a_moe_90": 1257,
      "gross_exchange": 3400,
      "directional_balance": 832,
      "dominant_direction": "Oklahoma to New Mexico",
      "main_flow": 2116,
      "reverse_flow": 1284,
      "reverse_share_of_main": 0.6068
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1830,
      "a_to_b_moe_90": 1067,
      "b_to_a": 1547,
      "b_to_a_moe_90": 974,
      "gross_exchange": 3377,
      "directional_balance": 283,
      "dominant_direction": "Oregon to Virginia",
      "main_flow": 1830,
      "reverse_flow": 1547,
      "reverse_share_of_main": 0.8454
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 876,
      "a_to_b_moe_90": 603,
      "b_to_a": 2491,
      "b_to_a_moe_90": 1854,
      "gross_exchange": 3367,
      "directional_balance": 1615,
      "dominant_direction": "Pennsylvania to Nevada",
      "main_flow": 2491,
      "reverse_flow": 876,
      "reverse_share_of_main": 0.3517
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 1351,
      "a_to_b_moe_90": 820,
      "b_to_a": 2011,
      "b_to_a_moe_90": 1219,
      "gross_exchange": 3362,
      "directional_balance": 660,
      "dominant_direction": "Maine to California",
      "main_flow": 2011,
      "reverse_flow": 1351,
      "reverse_share_of_main": 0.6718
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 2025,
      "a_to_b_moe_90": 825,
      "b_to_a": 1324,
      "b_to_a_moe_90": 758,
      "gross_exchange": 3349,
      "directional_balance": 701,
      "dominant_direction": "Maryland to Tennessee",
      "main_flow": 2025,
      "reverse_flow": 1324,
      "reverse_share_of_main": 0.6538
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 360,
      "a_to_b_moe_90": 288,
      "b_to_a": 2977,
      "b_to_a_moe_90": 1750,
      "gross_exchange": 3337,
      "directional_balance": 2617,
      "dominant_direction": "Pennsylvania to Louisiana",
      "main_flow": 2977,
      "reverse_flow": 360,
      "reverse_share_of_main": 0.1209
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 1979,
      "a_to_b_moe_90": 1767,
      "b_to_a": 1321,
      "b_to_a_moe_90": 1154,
      "gross_exchange": 3300,
      "directional_balance": 658,
      "dominant_direction": "Colorado to Louisiana",
      "main_flow": 1979,
      "reverse_flow": 1321,
      "reverse_share_of_main": 0.6675
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1364,
      "a_to_b_moe_90": 864,
      "b_to_a": 1924,
      "b_to_a_moe_90": 1491,
      "gross_exchange": 3288,
      "directional_balance": 560,
      "dominant_direction": "Tennessee to Nevada",
      "main_flow": 1924,
      "reverse_flow": 1364,
      "reverse_share_of_main": 0.7089
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 1208,
      "a_to_b_moe_90": 1148,
      "b_to_a": 2069,
      "b_to_a_moe_90": 1032,
      "gross_exchange": 3277,
      "directional_balance": 861,
      "dominant_direction": "Nebraska to Arizona",
      "main_flow": 2069,
      "reverse_flow": 1208,
      "reverse_share_of_main": 0.5839
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1819,
      "a_to_b_moe_90": 1062,
      "b_to_a": 1450,
      "b_to_a_moe_90": 1213,
      "gross_exchange": 3269,
      "directional_balance": 369,
      "dominant_direction": "Louisiana to Oklahoma",
      "main_flow": 1819,
      "reverse_flow": 1450,
      "reverse_share_of_main": 0.7971
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 1524,
      "a_to_b_moe_90": 1347,
      "b_to_a": 1724,
      "b_to_a_moe_90": 2028,
      "gross_exchange": 3248,
      "directional_balance": 200,
      "dominant_direction": "Kansas to Alabama",
      "main_flow": 1724,
      "reverse_flow": 1524,
      "reverse_share_of_main": 0.884
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 1580,
      "a_to_b_moe_90": 809,
      "b_to_a": 1665,
      "b_to_a_moe_90": 1201,
      "gross_exchange": 3245,
      "directional_balance": 85,
      "dominant_direction": "North Carolina to Louisiana",
      "main_flow": 1665,
      "reverse_flow": 1580,
      "reverse_share_of_main": 0.9489
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1334,
      "a_to_b_moe_90": 1197,
      "b_to_a": 1900,
      "b_to_a_moe_90": 1330,
      "gross_exchange": 3234,
      "directional_balance": 566,
      "dominant_direction": "Utah to Pennsylvania",
      "main_flow": 1900,
      "reverse_flow": 1334,
      "reverse_share_of_main": 0.7021
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 2018,
      "a_to_b_moe_90": 1444,
      "b_to_a": 1213,
      "b_to_a_moe_90": 878,
      "gross_exchange": 3231,
      "directional_balance": 805,
      "dominant_direction": "Pennsylvania to Vermont",
      "main_flow": 2018,
      "reverse_flow": 1213,
      "reverse_share_of_main": 0.6011
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 1523,
      "a_to_b_moe_90": 895,
      "b_to_a": 1702,
      "b_to_a_moe_90": 1037,
      "gross_exchange": 3225,
      "directional_balance": 179,
      "dominant_direction": "West Virginia to South Carolina",
      "main_flow": 1702,
      "reverse_flow": 1523,
      "reverse_share_of_main": 0.8948
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 2068,
      "a_to_b_moe_90": 1455,
      "b_to_a": 1149,
      "b_to_a_moe_90": 775,
      "gross_exchange": 3217,
      "directional_balance": 919,
      "dominant_direction": "Oklahoma to Washington",
      "main_flow": 2068,
      "reverse_flow": 1149,
      "reverse_share_of_main": 0.5556
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 167,
      "a_to_b_moe_90": 238,
      "b_to_a": 3041,
      "b_to_a_moe_90": 1240,
      "gross_exchange": 3208,
      "directional_balance": 2874,
      "dominant_direction": "Michigan to Alabama",
      "main_flow": 3041,
      "reverse_flow": 167,
      "reverse_share_of_main": 0.0549
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1395,
      "a_to_b_moe_90": 1041,
      "b_to_a": 1800,
      "b_to_a_moe_90": 1597,
      "gross_exchange": 3195,
      "directional_balance": 405,
      "dominant_direction": "Pennsylvania to New Hampshire",
      "main_flow": 1800,
      "reverse_flow": 1395,
      "reverse_share_of_main": 0.775
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 2396,
      "a_to_b_moe_90": 1432,
      "b_to_a": 790,
      "b_to_a_moe_90": 557,
      "gross_exchange": 3186,
      "directional_balance": 1606,
      "dominant_direction": "Texas to Wyoming",
      "main_flow": 2396,
      "reverse_flow": 790,
      "reverse_share_of_main": 0.3297
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1138,
      "a_to_b_moe_90": 1084,
      "b_to_a": 2031,
      "b_to_a_moe_90": 1818,
      "gross_exchange": 3169,
      "directional_balance": 893,
      "dominant_direction": "South Carolina to Hawaii",
      "main_flow": 2031,
      "reverse_flow": 1138,
      "reverse_share_of_main": 0.5603
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 1828,
      "a_to_b_moe_90": 1289,
      "b_to_a": 1340,
      "b_to_a_moe_90": 962,
      "gross_exchange": 3168,
      "directional_balance": 488,
      "dominant_direction": "Alabama to Missouri",
      "main_flow": 1828,
      "reverse_flow": 1340,
      "reverse_share_of_main": 0.733
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 250,
      "a_to_b_moe_90": 262,
      "b_to_a": 2915,
      "b_to_a_moe_90": 2230,
      "gross_exchange": 3165,
      "directional_balance": 2665,
      "dominant_direction": "New Mexico to Arkansas",
      "main_flow": 2915,
      "reverse_flow": 250,
      "reverse_share_of_main": 0.0858
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 1111,
      "a_to_b_moe_90": 1068,
      "b_to_a": 2052,
      "b_to_a_moe_90": 1189,
      "gross_exchange": 3163,
      "directional_balance": 941,
      "dominant_direction": "Montana to Idaho",
      "main_flow": 2052,
      "reverse_flow": 1111,
      "reverse_share_of_main": 0.5414
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 2508,
      "a_to_b_moe_90": 2847,
      "b_to_a": 654,
      "b_to_a_moe_90": 437,
      "gross_exchange": 3162,
      "directional_balance": 1854,
      "dominant_direction": "Florida to North Dakota",
      "main_flow": 2508,
      "reverse_flow": 654,
      "reverse_share_of_main": 0.2608
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 1447,
      "a_to_b_moe_90": 902,
      "b_to_a": 1714,
      "b_to_a_moe_90": 1051,
      "gross_exchange": 3161,
      "directional_balance": 267,
      "dominant_direction": "Illinois to Arkansas",
      "main_flow": 1714,
      "reverse_flow": 1447,
      "reverse_share_of_main": 0.8442
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 2287,
      "a_to_b_moe_90": 1263,
      "b_to_a": 853,
      "b_to_a_moe_90": 569,
      "gross_exchange": 3140,
      "directional_balance": 1434,
      "dominant_direction": "Connecticut to South Carolina",
      "main_flow": 2287,
      "reverse_flow": 853,
      "reverse_share_of_main": 0.373
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 1386,
      "a_to_b_moe_90": 757,
      "b_to_a": 1751,
      "b_to_a_moe_90": 842,
      "gross_exchange": 3137,
      "directional_balance": 365,
      "dominant_direction": "New York to Maine",
      "main_flow": 1751,
      "reverse_flow": 1386,
      "reverse_share_of_main": 0.7915
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1446,
      "a_to_b_moe_90": 810,
      "b_to_a": 1687,
      "b_to_a_moe_90": 888,
      "gross_exchange": 3133,
      "directional_balance": 241,
      "dominant_direction": "Oklahoma to North Carolina",
      "main_flow": 1687,
      "reverse_flow": 1446,
      "reverse_share_of_main": 0.8571
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 780,
      "a_to_b_moe_90": 519,
      "b_to_a": 2346,
      "b_to_a_moe_90": 2424,
      "gross_exchange": 3126,
      "directional_balance": 1566,
      "dominant_direction": "Washington to Nebraska",
      "main_flow": 2346,
      "reverse_flow": 780,
      "reverse_share_of_main": 0.3325
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 2889,
      "a_to_b_moe_90": 1740,
      "b_to_a": 233,
      "b_to_a_moe_90": 253,
      "gross_exchange": 3122,
      "directional_balance": 2656,
      "dominant_direction": "Arizona to Oklahoma",
      "main_flow": 2889,
      "reverse_flow": 233,
      "reverse_share_of_main": 0.0807
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 2071,
      "a_to_b_moe_90": 1561,
      "b_to_a": 1049,
      "b_to_a_moe_90": 725,
      "gross_exchange": 3120,
      "directional_balance": 1022,
      "dominant_direction": "Mississippi to Oklahoma",
      "main_flow": 2071,
      "reverse_flow": 1049,
      "reverse_share_of_main": 0.5065
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 1711,
      "a_to_b_moe_90": 878,
      "b_to_a": 1403,
      "b_to_a_moe_90": 1313,
      "gross_exchange": 3114,
      "directional_balance": 308,
      "dominant_direction": "Arkansas to Kansas",
      "main_flow": 1711,
      "reverse_flow": 1403,
      "reverse_share_of_main": 0.82
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1004,
      "a_to_b_moe_90": 608,
      "b_to_a": 2088,
      "b_to_a_moe_90": 1118,
      "gross_exchange": 3092,
      "directional_balance": 1084,
      "dominant_direction": "Washington to Michigan",
      "main_flow": 2088,
      "reverse_flow": 1004,
      "reverse_share_of_main": 0.4808
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 364,
      "a_to_b_moe_90": 347,
      "b_to_a": 2713,
      "b_to_a_moe_90": 2455,
      "gross_exchange": 3077,
      "directional_balance": 2349,
      "dominant_direction": "Utah to North Dakota",
      "main_flow": 2713,
      "reverse_flow": 364,
      "reverse_share_of_main": 0.1342
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1530,
      "a_to_b_moe_90": 964,
      "b_to_a": 1543,
      "b_to_a_moe_90": 1738,
      "gross_exchange": 3073,
      "directional_balance": 13,
      "dominant_direction": "South Carolina to Missouri",
      "main_flow": 1543,
      "reverse_flow": 1530,
      "reverse_share_of_main": 0.9916
    },
    {
      "state_a": "Utah",
      "state_a_fips": "49",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 1525,
      "a_to_b_moe_90": 976,
      "b_to_a": 1526,
      "b_to_a_moe_90": 1229,
      "gross_exchange": 3051,
      "directional_balance": 1,
      "dominant_direction": "Wyoming to Utah",
      "main_flow": 1526,
      "reverse_flow": 1525,
      "reverse_share_of_main": 0.9993
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 2054,
      "a_to_b_moe_90": 1068,
      "b_to_a": 969,
      "b_to_a_moe_90": 526,
      "gross_exchange": 3023,
      "directional_balance": 1085,
      "dominant_direction": "Massachusetts to Oregon",
      "main_flow": 2054,
      "reverse_flow": 969,
      "reverse_share_of_main": 0.4718
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1271,
      "a_to_b_moe_90": 851,
      "b_to_a": 1752,
      "b_to_a_moe_90": 1096,
      "gross_exchange": 3023,
      "directional_balance": 481,
      "dominant_direction": "Pennsylvania to Kentucky",
      "main_flow": 1752,
      "reverse_flow": 1271,
      "reverse_share_of_main": 0.7255
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 1945,
      "a_to_b_moe_90": 842,
      "b_to_a": 1060,
      "b_to_a_moe_90": 554,
      "gross_exchange": 3005,
      "directional_balance": 885,
      "dominant_direction": "California to Iowa",
      "main_flow": 1945,
      "reverse_flow": 1060,
      "reverse_share_of_main": 0.545
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 2422,
      "a_to_b_moe_90": 2009,
      "b_to_a": 582,
      "b_to_a_moe_90": 543,
      "gross_exchange": 3004,
      "directional_balance": 1840,
      "dominant_direction": "Nebraska to Pennsylvania",
      "main_flow": 2422,
      "reverse_flow": 582,
      "reverse_share_of_main": 0.2403
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1754,
      "a_to_b_moe_90": 1257,
      "b_to_a": 1241,
      "b_to_a_moe_90": 856,
      "gross_exchange": 2995,
      "directional_balance": 513,
      "dominant_direction": "Louisiana to South Carolina",
      "main_flow": 1754,
      "reverse_flow": 1241,
      "reverse_share_of_main": 0.7075
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1487,
      "a_to_b_moe_90": 831,
      "b_to_a": 1497,
      "b_to_a_moe_90": 901,
      "gross_exchange": 2984,
      "directional_balance": 10,
      "dominant_direction": "Utah to Missouri",
      "main_flow": 1497,
      "reverse_flow": 1487,
      "reverse_share_of_main": 0.9933
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 1809,
      "a_to_b_moe_90": 991,
      "b_to_a": 1157,
      "b_to_a_moe_90": 735,
      "gross_exchange": 2966,
      "directional_balance": 652,
      "dominant_direction": "Florida to Idaho",
      "main_flow": 1809,
      "reverse_flow": 1157,
      "reverse_share_of_main": 0.6396
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 898,
      "a_to_b_moe_90": 675,
      "b_to_a": 2061,
      "b_to_a_moe_90": 2099,
      "gross_exchange": 2959,
      "directional_balance": 1163,
      "dominant_direction": "Hawaii to Colorado",
      "main_flow": 2061,
      "reverse_flow": 898,
      "reverse_share_of_main": 0.4357
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 520,
      "a_to_b_moe_90": 475,
      "b_to_a": 2434,
      "b_to_a_moe_90": 1606,
      "gross_exchange": 2954,
      "directional_balance": 1914,
      "dominant_direction": "Louisiana to Indiana",
      "main_flow": 2434,
      "reverse_flow": 520,
      "reverse_share_of_main": 0.2136
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1009,
      "a_to_b_moe_90": 1200,
      "b_to_a": 1945,
      "b_to_a_moe_90": 1334,
      "gross_exchange": 2954,
      "directional_balance": 936,
      "dominant_direction": "Pennsylvania to Oklahoma",
      "main_flow": 1945,
      "reverse_flow": 1009,
      "reverse_share_of_main": 0.5188
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Colorado",
      "state_b_fips": "08",
      "a_to_b": 665,
      "a_to_b_moe_90": 690,
      "b_to_a": 2287,
      "b_to_a_moe_90": 1255,
      "gross_exchange": 2952,
      "directional_balance": 1622,
      "dominant_direction": "Colorado to Arkansas",
      "main_flow": 2287,
      "reverse_flow": 665,
      "reverse_share_of_main": 0.2908
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 2064,
      "a_to_b_moe_90": 771,
      "b_to_a": 875,
      "b_to_a_moe_90": 651,
      "gross_exchange": 2939,
      "directional_balance": 1189,
      "dominant_direction": "Illinois to Mississippi",
      "main_flow": 2064,
      "reverse_flow": 875,
      "reverse_share_of_main": 0.4239
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 961,
      "a_to_b_moe_90": 724,
      "b_to_a": 1978,
      "b_to_a_moe_90": 2451,
      "gross_exchange": 2939,
      "directional_balance": 1017,
      "dominant_direction": "Michigan to Louisiana",
      "main_flow": 1978,
      "reverse_flow": 961,
      "reverse_share_of_main": 0.4858
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 1403,
      "a_to_b_moe_90": 1446,
      "b_to_a": 1536,
      "b_to_a_moe_90": 966,
      "gross_exchange": 2939,
      "directional_balance": 133,
      "dominant_direction": "Minnesota to Massachusetts",
      "main_flow": 1536,
      "reverse_flow": 1403,
      "reverse_share_of_main": 0.9134
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 1954,
      "a_to_b_moe_90": 1127,
      "b_to_a": 982,
      "b_to_a_moe_90": 642,
      "gross_exchange": 2936,
      "directional_balance": 972,
      "dominant_direction": "New Hampshire to Vermont",
      "main_flow": 1954,
      "reverse_flow": 982,
      "reverse_share_of_main": 0.5026
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Arkansas",
      "state_b_fips": "05",
      "a_to_b": 1328,
      "a_to_b_moe_90": 883,
      "b_to_a": 1601,
      "b_to_a_moe_90": 1312,
      "gross_exchange": 2929,
      "directional_balance": 273,
      "dominant_direction": "Arkansas to Alabama",
      "main_flow": 1601,
      "reverse_flow": 1328,
      "reverse_share_of_main": 0.8295
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 1810,
      "a_to_b_moe_90": 1702,
      "b_to_a": 1093,
      "b_to_a_moe_90": 1264,
      "gross_exchange": 2903,
      "directional_balance": 717,
      "dominant_direction": "New Jersey to Wisconsin",
      "main_flow": 1810,
      "reverse_flow": 1093,
      "reverse_share_of_main": 0.6039
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 2773,
      "a_to_b_moe_90": 2135,
      "b_to_a": 128,
      "b_to_a_moe_90": 166,
      "gross_exchange": 2901,
      "directional_balance": 2645,
      "dominant_direction": "Iowa to New Jersey",
      "main_flow": 2773,
      "reverse_flow": 128,
      "reverse_share_of_main": 0.0462
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 2736,
      "a_to_b_moe_90": 2021,
      "b_to_a": 147,
      "b_to_a_moe_90": 231,
      "gross_exchange": 2883,
      "directional_balance": 2589,
      "dominant_direction": "Oregon to Wisconsin",
      "main_flow": 2736,
      "reverse_flow": 147,
      "reverse_share_of_main": 0.0537
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 1649,
      "a_to_b_moe_90": 1546,
      "b_to_a": 1231,
      "b_to_a_moe_90": 754,
      "gross_exchange": 2880,
      "directional_balance": 418,
      "dominant_direction": "Alabama to Maryland",
      "main_flow": 1649,
      "reverse_flow": 1231,
      "reverse_share_of_main": 0.7465
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1464,
      "a_to_b_moe_90": 770,
      "b_to_a": 1411,
      "b_to_a_moe_90": 1108,
      "gross_exchange": 2875,
      "directional_balance": 53,
      "dominant_direction": "Louisiana to Virginia",
      "main_flow": 1464,
      "reverse_flow": 1411,
      "reverse_share_of_main": 0.9638
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Florida",
      "state_b_fips": "12",
      "a_to_b": 1861,
      "a_to_b_moe_90": 943,
      "b_to_a": 990,
      "b_to_a_moe_90": 592,
      "gross_exchange": 2851,
      "directional_balance": 871,
      "dominant_direction": "District of Columbia to Florida",
      "main_flow": 1861,
      "reverse_flow": 990,
      "reverse_share_of_main": 0.532
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 1098,
      "a_to_b_moe_90": 813,
      "b_to_a": 1745,
      "b_to_a_moe_90": 674,
      "gross_exchange": 2843,
      "directional_balance": 647,
      "dominant_direction": "Massachusetts to District of Columbia",
      "main_flow": 1745,
      "reverse_flow": 1098,
      "reverse_share_of_main": 0.6292
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 956,
      "a_to_b_moe_90": 909,
      "b_to_a": 1880,
      "b_to_a_moe_90": 1152,
      "gross_exchange": 2836,
      "directional_balance": 924,
      "dominant_direction": "Maryland to Kentucky",
      "main_flow": 1880,
      "reverse_flow": 956,
      "reverse_share_of_main": 0.5085
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 1978,
      "a_to_b_moe_90": 2048,
      "b_to_a": 839,
      "b_to_a_moe_90": 900,
      "gross_exchange": 2817,
      "directional_balance": 1139,
      "dominant_direction": "Kansas to Maryland",
      "main_flow": 1978,
      "reverse_flow": 839,
      "reverse_share_of_main": 0.4242
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 1214,
      "a_to_b_moe_90": 733,
      "b_to_a": 1603,
      "b_to_a_moe_90": 1117,
      "gross_exchange": 2817,
      "directional_balance": 389,
      "dominant_direction": "Hawaii to Arizona",
      "main_flow": 1603,
      "reverse_flow": 1214,
      "reverse_share_of_main": 0.7573
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 2816,
      "a_to_b_moe_90": 3518,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 2816,
      "directional_balance": 2816,
      "dominant_direction": "Oregon to West Virginia",
      "main_flow": 2816,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 722,
      "a_to_b_moe_90": 693,
      "b_to_a": 2083,
      "b_to_a_moe_90": 1128,
      "gross_exchange": 2805,
      "directional_balance": 1361,
      "dominant_direction": "New York to Kentucky",
      "main_flow": 2083,
      "reverse_flow": 722,
      "reverse_share_of_main": 0.3466
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 1296,
      "a_to_b_moe_90": 769,
      "b_to_a": 1503,
      "b_to_a_moe_90": 843,
      "gross_exchange": 2799,
      "directional_balance": 207,
      "dominant_direction": "Indiana to Alabama",
      "main_flow": 1503,
      "reverse_flow": 1296,
      "reverse_share_of_main": 0.8623
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 1663,
      "a_to_b_moe_90": 995,
      "b_to_a": 1126,
      "b_to_a_moe_90": 829,
      "gross_exchange": 2789,
      "directional_balance": 537,
      "dominant_direction": "North Dakota to South Dakota",
      "main_flow": 1663,
      "reverse_flow": 1126,
      "reverse_share_of_main": 0.6771
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1318,
      "a_to_b_moe_90": 633,
      "b_to_a": 1421,
      "b_to_a_moe_90": 844,
      "gross_exchange": 2739,
      "directional_balance": 103,
      "dominant_direction": "South Carolina to Michigan",
      "main_flow": 1421,
      "reverse_flow": 1318,
      "reverse_share_of_main": 0.9275
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 1209,
      "a_to_b_moe_90": 983,
      "b_to_a": 1526,
      "b_to_a_moe_90": 770,
      "gross_exchange": 2735,
      "directional_balance": 317,
      "dominant_direction": "Missouri to Kentucky",
      "main_flow": 1526,
      "reverse_flow": 1209,
      "reverse_share_of_main": 0.7923
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 2300,
      "a_to_b_moe_90": 1736,
      "b_to_a": 430,
      "b_to_a_moe_90": 402,
      "gross_exchange": 2730,
      "directional_balance": 1870,
      "dominant_direction": "New Jersey to Vermont",
      "main_flow": 2300,
      "reverse_flow": 430,
      "reverse_share_of_main": 0.187
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1216,
      "a_to_b_moe_90": 937,
      "b_to_a": 1511,
      "b_to_a_moe_90": 905,
      "gross_exchange": 2727,
      "directional_balance": 295,
      "dominant_direction": "Pennsylvania to Missouri",
      "main_flow": 1511,
      "reverse_flow": 1216,
      "reverse_share_of_main": 0.8048
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 1362,
      "a_to_b_moe_90": 986,
      "b_to_a": 1359,
      "b_to_a_moe_90": 907,
      "gross_exchange": 2721,
      "directional_balance": 3,
      "dominant_direction": "Kansas to Ohio",
      "main_flow": 1362,
      "reverse_flow": 1359,
      "reverse_share_of_main": 0.9978
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Connecticut",
      "state_b_fips": "09",
      "a_to_b": 538,
      "a_to_b_moe_90": 622,
      "b_to_a": 2175,
      "b_to_a_moe_90": 1066,
      "gross_exchange": 2713,
      "directional_balance": 1637,
      "dominant_direction": "Connecticut to Colorado",
      "main_flow": 2175,
      "reverse_flow": 538,
      "reverse_share_of_main": 0.2474
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 867,
      "a_to_b_moe_90": 918,
      "b_to_a": 1842,
      "b_to_a_moe_90": 1797,
      "gross_exchange": 2709,
      "directional_balance": 975,
      "dominant_direction": "South Dakota to South Carolina",
      "main_flow": 1842,
      "reverse_flow": 867,
      "reverse_share_of_main": 0.4707
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 2164,
      "a_to_b_moe_90": 2633,
      "b_to_a": 540,
      "b_to_a_moe_90": 567,
      "gross_exchange": 2704,
      "directional_balance": 1624,
      "dominant_direction": "Mississippi to New York",
      "main_flow": 2164,
      "reverse_flow": 540,
      "reverse_share_of_main": 0.2495
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 1277,
      "a_to_b_moe_90": 985,
      "b_to_a": 1422,
      "b_to_a_moe_90": 1152,
      "gross_exchange": 2699,
      "directional_balance": 145,
      "dominant_direction": "New York to Kansas",
      "main_flow": 1422,
      "reverse_flow": 1277,
      "reverse_share_of_main": 0.898
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 2124,
      "a_to_b_moe_90": 943,
      "b_to_a": 552,
      "b_to_a_moe_90": 393,
      "gross_exchange": 2676,
      "directional_balance": 1572,
      "dominant_direction": "California to South Dakota",
      "main_flow": 2124,
      "reverse_flow": 552,
      "reverse_share_of_main": 0.2599
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 903,
      "a_to_b_moe_90": 701,
      "b_to_a": 1757,
      "b_to_a_moe_90": 1289,
      "gross_exchange": 2660,
      "directional_balance": 854,
      "dominant_direction": "Utah to Massachusetts",
      "main_flow": 1757,
      "reverse_flow": 903,
      "reverse_share_of_main": 0.5139
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 1709,
      "a_to_b_moe_90": 1751,
      "b_to_a": 930,
      "b_to_a_moe_90": 936,
      "gross_exchange": 2639,
      "directional_balance": 779,
      "dominant_direction": "Montana to New Mexico",
      "main_flow": 1709,
      "reverse_flow": 930,
      "reverse_share_of_main": 0.5442
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 204,
      "a_to_b_moe_90": 304,
      "b_to_a": 2420,
      "b_to_a_moe_90": 1563,
      "gross_exchange": 2624,
      "directional_balance": 2216,
      "dominant_direction": "Iowa to Arkansas",
      "main_flow": 2420,
      "reverse_flow": 204,
      "reverse_share_of_main": 0.0843
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 2100,
      "a_to_b_moe_90": 1383,
      "b_to_a": 521,
      "b_to_a_moe_90": 450,
      "gross_exchange": 2621,
      "directional_balance": 1579,
      "dominant_direction": "Iowa to North Carolina",
      "main_flow": 2100,
      "reverse_flow": 521,
      "reverse_share_of_main": 0.2481
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 1885,
      "a_to_b_moe_90": 1742,
      "b_to_a": 733,
      "b_to_a_moe_90": 676,
      "gross_exchange": 2618,
      "directional_balance": 1152,
      "dominant_direction": "Georgia to Hawaii",
      "main_flow": 1885,
      "reverse_flow": 733,
      "reverse_share_of_main": 0.3889
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Arkansas",
      "state_b_fips": "05",
      "a_to_b": 2120,
      "a_to_b_moe_90": 1496,
      "b_to_a": 495,
      "b_to_a_moe_90": 337,
      "gross_exchange": 2615,
      "directional_balance": 1625,
      "dominant_direction": "Arizona to Arkansas",
      "main_flow": 2120,
      "reverse_flow": 495,
      "reverse_share_of_main": 0.2335
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 1580,
      "a_to_b_moe_90": 1153,
      "b_to_a": 1035,
      "b_to_a_moe_90": 825,
      "gross_exchange": 2615,
      "directional_balance": 545,
      "dominant_direction": "Iowa to Ohio",
      "main_flow": 1580,
      "reverse_flow": 1035,
      "reverse_share_of_main": 0.6551
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 904,
      "a_to_b_moe_90": 738,
      "b_to_a": 1704,
      "b_to_a_moe_90": 1265,
      "gross_exchange": 2608,
      "directional_balance": 800,
      "dominant_direction": "New Mexico to Georgia",
      "main_flow": 1704,
      "reverse_flow": 904,
      "reverse_share_of_main": 0.5305
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Arizona",
      "state_b_fips": "04",
      "a_to_b": 2421,
      "a_to_b_moe_90": 1662,
      "b_to_a": 179,
      "b_to_a_moe_90": 176,
      "gross_exchange": 2600,
      "directional_balance": 2242,
      "dominant_direction": "Alaska to Arizona",
      "main_flow": 2421,
      "reverse_flow": 179,
      "reverse_share_of_main": 0.0739
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 1774,
      "a_to_b_moe_90": 2564,
      "b_to_a": 816,
      "b_to_a_moe_90": 1280,
      "gross_exchange": 2590,
      "directional_balance": 958,
      "dominant_direction": "Maryland to Nebraska",
      "main_flow": 1774,
      "reverse_flow": 816,
      "reverse_share_of_main": 0.46
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 159,
      "a_to_b_moe_90": 191,
      "b_to_a": 2424,
      "b_to_a_moe_90": 955,
      "gross_exchange": 2583,
      "directional_balance": 2265,
      "dominant_direction": "New Jersey to District of Columbia",
      "main_flow": 2424,
      "reverse_flow": 159,
      "reverse_share_of_main": 0.0656
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 733,
      "a_to_b_moe_90": 594,
      "b_to_a": 1841,
      "b_to_a_moe_90": 1404,
      "gross_exchange": 2574,
      "directional_balance": 1108,
      "dominant_direction": "Massachusetts to Alabama",
      "main_flow": 1841,
      "reverse_flow": 733,
      "reverse_share_of_main": 0.3982
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 2307,
      "a_to_b_moe_90": 1423,
      "b_to_a": 260,
      "b_to_a_moe_90": 261,
      "gross_exchange": 2567,
      "directional_balance": 2047,
      "dominant_direction": "Alaska to North Carolina",
      "main_flow": 2307,
      "reverse_flow": 260,
      "reverse_share_of_main": 0.1127
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 1764,
      "a_to_b_moe_90": 1507,
      "b_to_a": 771,
      "b_to_a_moe_90": 909,
      "gross_exchange": 2535,
      "directional_balance": 993,
      "dominant_direction": "Alaska to Georgia",
      "main_flow": 1764,
      "reverse_flow": 771,
      "reverse_share_of_main": 0.4371
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 914,
      "a_to_b_moe_90": 597,
      "b_to_a": 1610,
      "b_to_a_moe_90": 802,
      "gross_exchange": 2524,
      "directional_balance": 696,
      "dominant_direction": "New Jersey to Colorado",
      "main_flow": 1610,
      "reverse_flow": 914,
      "reverse_share_of_main": 0.5677
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 1879,
      "a_to_b_moe_90": 1609,
      "b_to_a": 634,
      "b_to_a_moe_90": 542,
      "gross_exchange": 2513,
      "directional_balance": 1245,
      "dominant_direction": "Colorado to North Dakota",
      "main_flow": 1879,
      "reverse_flow": 634,
      "reverse_share_of_main": 0.3374
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 594,
      "a_to_b_moe_90": 396,
      "b_to_a": 1917,
      "b_to_a_moe_90": 1082,
      "gross_exchange": 2511,
      "directional_balance": 1323,
      "dominant_direction": "Michigan to Massachusetts",
      "main_flow": 1917,
      "reverse_flow": 594,
      "reverse_share_of_main": 0.3099
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 2424,
      "a_to_b_moe_90": 2171,
      "b_to_a": 80,
      "b_to_a_moe_90": 90,
      "gross_exchange": 2504,
      "directional_balance": 2344,
      "dominant_direction": "Louisiana to Ohio",
      "main_flow": 2424,
      "reverse_flow": 80,
      "reverse_share_of_main": 0.033
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 446,
      "a_to_b_moe_90": 386,
      "b_to_a": 2055,
      "b_to_a_moe_90": 2567,
      "gross_exchange": 2501,
      "directional_balance": 1609,
      "dominant_direction": "Georgia to Delaware",
      "main_flow": 2055,
      "reverse_flow": 446,
      "reverse_share_of_main": 0.217
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 1520,
      "a_to_b_moe_90": 1038,
      "b_to_a": 969,
      "b_to_a_moe_90": 1116,
      "gross_exchange": 2489,
      "directional_balance": 551,
      "dominant_direction": "Arkansas to Georgia",
      "main_flow": 1520,
      "reverse_flow": 969,
      "reverse_share_of_main": 0.6375
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1230,
      "a_to_b_moe_90": 1031,
      "b_to_a": 1252,
      "b_to_a_moe_90": 1174,
      "gross_exchange": 2482,
      "directional_balance": 22,
      "dominant_direction": "Oklahoma to Georgia",
      "main_flow": 1252,
      "reverse_flow": 1230,
      "reverse_share_of_main": 0.9824
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 2398,
      "a_to_b_moe_90": 2002,
      "b_to_a": 83,
      "b_to_a_moe_90": 97,
      "gross_exchange": 2481,
      "directional_balance": 2315,
      "dominant_direction": "Alaska to Utah",
      "main_flow": 2398,
      "reverse_flow": 83,
      "reverse_share_of_main": 0.0346
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 1660,
      "a_to_b_moe_90": 1110,
      "b_to_a": 817,
      "b_to_a_moe_90": 532,
      "gross_exchange": 2477,
      "directional_balance": 843,
      "dominant_direction": "Colorado to Montana",
      "main_flow": 1660,
      "reverse_flow": 817,
      "reverse_share_of_main": 0.4922
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 1411,
      "a_to_b_moe_90": 1279,
      "b_to_a": 1064,
      "b_to_a_moe_90": 986,
      "gross_exchange": 2475,
      "directional_balance": 347,
      "dominant_direction": "California to West Virginia",
      "main_flow": 1411,
      "reverse_flow": 1064,
      "reverse_share_of_main": 0.7541
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 1818,
      "a_to_b_moe_90": 1118,
      "b_to_a": 646,
      "b_to_a_moe_90": 692,
      "gross_exchange": 2464,
      "directional_balance": 1172,
      "dominant_direction": "Idaho to Illinois",
      "main_flow": 1818,
      "reverse_flow": 646,
      "reverse_share_of_main": 0.3553
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 1896,
      "a_to_b_moe_90": 1173,
      "b_to_a": 561,
      "b_to_a_moe_90": 463,
      "gross_exchange": 2457,
      "directional_balance": 1335,
      "dominant_direction": "Nevada to North Carolina",
      "main_flow": 1896,
      "reverse_flow": 561,
      "reverse_share_of_main": 0.2959
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 1582,
      "a_to_b_moe_90": 1377,
      "b_to_a": 875,
      "b_to_a_moe_90": 677,
      "gross_exchange": 2457,
      "directional_balance": 707,
      "dominant_direction": "North Dakota to Texas",
      "main_flow": 1582,
      "reverse_flow": 875,
      "reverse_share_of_main": 0.5531
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 2057,
      "a_to_b_moe_90": 1946,
      "b_to_a": 398,
      "b_to_a_moe_90": 325,
      "gross_exchange": 2455,
      "directional_balance": 1659,
      "dominant_direction": "Colorado to New Hampshire",
      "main_flow": 2057,
      "reverse_flow": 398,
      "reverse_share_of_main": 0.1935
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1264,
      "a_to_b_moe_90": 1165,
      "b_to_a": 1189,
      "b_to_a_moe_90": 596,
      "gross_exchange": 2453,
      "directional_balance": 75,
      "dominant_direction": "Oregon to Pennsylvania",
      "main_flow": 1264,
      "reverse_flow": 1189,
      "reverse_share_of_main": 0.9407
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 776,
      "a_to_b_moe_90": 560,
      "b_to_a": 1644,
      "b_to_a_moe_90": 1758,
      "gross_exchange": 2420,
      "directional_balance": 868,
      "dominant_direction": "Texas to New Hampshire",
      "main_flow": 1644,
      "reverse_flow": 776,
      "reverse_share_of_main": 0.472
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 628,
      "a_to_b_moe_90": 537,
      "b_to_a": 1791,
      "b_to_a_moe_90": 922,
      "gross_exchange": 2419,
      "directional_balance": 1163,
      "dominant_direction": "North Carolina to Mississippi",
      "main_flow": 1791,
      "reverse_flow": 628,
      "reverse_share_of_main": 0.3506
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 2049,
      "a_to_b_moe_90": 2138,
      "b_to_a": 368,
      "b_to_a_moe_90": 542,
      "gross_exchange": 2417,
      "directional_balance": 1681,
      "dominant_direction": "Alabama to Minnesota",
      "main_flow": 2049,
      "reverse_flow": 368,
      "reverse_share_of_main": 0.1796
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 710,
      "a_to_b_moe_90": 594,
      "b_to_a": 1680,
      "b_to_a_moe_90": 779,
      "gross_exchange": 2390,
      "directional_balance": 970,
      "dominant_direction": "Wisconsin to Ohio",
      "main_flow": 1680,
      "reverse_flow": 710,
      "reverse_share_of_main": 0.4226
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 2076,
      "a_to_b_moe_90": 1616,
      "b_to_a": 313,
      "b_to_a_moe_90": 253,
      "gross_exchange": 2389,
      "directional_balance": 1763,
      "dominant_direction": "Iowa to Nevada",
      "main_flow": 2076,
      "reverse_flow": 313,
      "reverse_share_of_main": 0.1508
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1606,
      "a_to_b_moe_90": 2016,
      "b_to_a": 757,
      "b_to_a_moe_90": 654,
      "gross_exchange": 2363,
      "directional_balance": 849,
      "dominant_direction": "Hawaii to Oklahoma",
      "main_flow": 1606,
      "reverse_flow": 757,
      "reverse_share_of_main": 0.4714
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1521,
      "a_to_b_moe_90": 1006,
      "b_to_a": 824,
      "b_to_a_moe_90": 699,
      "gross_exchange": 2345,
      "directional_balance": 697,
      "dominant_direction": "Indiana to Oklahoma",
      "main_flow": 1521,
      "reverse_flow": 824,
      "reverse_share_of_main": 0.5417
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 847,
      "a_to_b_moe_90": 856,
      "b_to_a": 1482,
      "b_to_a_moe_90": 895,
      "gross_exchange": 2329,
      "directional_balance": 635,
      "dominant_direction": "Utah to Tennessee",
      "main_flow": 1482,
      "reverse_flow": 847,
      "reverse_share_of_main": 0.5715
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 1539,
      "a_to_b_moe_90": 1407,
      "b_to_a": 785,
      "b_to_a_moe_90": 831,
      "gross_exchange": 2324,
      "directional_balance": 754,
      "dominant_direction": "Minnesota to New Mexico",
      "main_flow": 1539,
      "reverse_flow": 785,
      "reverse_share_of_main": 0.5101
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1302,
      "a_to_b_moe_90": 1220,
      "b_to_a": 1011,
      "b_to_a_moe_90": 753,
      "gross_exchange": 2313,
      "directional_balance": 291,
      "dominant_direction": "Missouri to Oregon",
      "main_flow": 1302,
      "reverse_flow": 1011,
      "reverse_share_of_main": 0.7765
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 1443,
      "a_to_b_moe_90": 1271,
      "b_to_a": 868,
      "b_to_a_moe_90": 708,
      "gross_exchange": 2311,
      "directional_balance": 575,
      "dominant_direction": "Kansas to Wisconsin",
      "main_flow": 1443,
      "reverse_flow": 868,
      "reverse_share_of_main": 0.6015
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 1123,
      "a_to_b_moe_90": 837,
      "b_to_a": 1176,
      "b_to_a_moe_90": 587,
      "gross_exchange": 2299,
      "directional_balance": 53,
      "dominant_direction": "Nebraska to Illinois",
      "main_flow": 1176,
      "reverse_flow": 1123,
      "reverse_share_of_main": 0.9549
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 568,
      "a_to_b_moe_90": 501,
      "b_to_a": 1730,
      "b_to_a_moe_90": 1963,
      "gross_exchange": 2298,
      "directional_balance": 1162,
      "dominant_direction": "Utah to Nebraska",
      "main_flow": 1730,
      "reverse_flow": 568,
      "reverse_share_of_main": 0.3283
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 992,
      "a_to_b_moe_90": 556,
      "b_to_a": 1297,
      "b_to_a_moe_90": 728,
      "gross_exchange": 2289,
      "directional_balance": 305,
      "dominant_direction": "Nebraska to Minnesota",
      "main_flow": 1297,
      "reverse_flow": 992,
      "reverse_share_of_main": 0.7648
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 2151,
      "a_to_b_moe_90": 1477,
      "b_to_a": 111,
      "b_to_a_moe_90": 103,
      "gross_exchange": 2262,
      "directional_balance": 2040,
      "dominant_direction": "Illinois to Utah",
      "main_flow": 2151,
      "reverse_flow": 111,
      "reverse_share_of_main": 0.0516
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 1267,
      "a_to_b_moe_90": 1011,
      "b_to_a": 972,
      "b_to_a_moe_90": 792,
      "gross_exchange": 2239,
      "directional_balance": 295,
      "dominant_direction": "Iowa to Michigan",
      "main_flow": 1267,
      "reverse_flow": 972,
      "reverse_share_of_main": 0.7672
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1214,
      "a_to_b_moe_90": 900,
      "b_to_a": 1022,
      "b_to_a_moe_90": 967,
      "gross_exchange": 2236,
      "directional_balance": 192,
      "dominant_direction": "Minnesota to Oregon",
      "main_flow": 1214,
      "reverse_flow": 1022,
      "reverse_share_of_main": 0.8418
    },
    {
      "state_a": "South Dakota",
      "state_a_fips": "46",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 1072,
      "a_to_b_moe_90": 630,
      "b_to_a": 1164,
      "b_to_a_moe_90": 837,
      "gross_exchange": 2236,
      "directional_balance": 92,
      "dominant_direction": "Wyoming to South Dakota",
      "main_flow": 1164,
      "reverse_flow": 1072,
      "reverse_share_of_main": 0.921
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 380,
      "a_to_b_moe_90": 347,
      "b_to_a": 1855,
      "b_to_a_moe_90": 1047,
      "gross_exchange": 2235,
      "directional_balance": 1475,
      "dominant_direction": "Wyoming to Montana",
      "main_flow": 1855,
      "reverse_flow": 380,
      "reverse_share_of_main": 0.2049
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 1560,
      "a_to_b_moe_90": 725,
      "b_to_a": 667,
      "b_to_a_moe_90": 562,
      "gross_exchange": 2227,
      "directional_balance": 893,
      "dominant_direction": "Arizona to Maryland",
      "main_flow": 1560,
      "reverse_flow": 667,
      "reverse_share_of_main": 0.4276
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 879,
      "a_to_b_moe_90": 681,
      "b_to_a": 1348,
      "b_to_a_moe_90": 967,
      "gross_exchange": 2227,
      "directional_balance": 469,
      "dominant_direction": "New Mexico to Nevada",
      "main_flow": 1348,
      "reverse_flow": 879,
      "reverse_share_of_main": 0.6521
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 1377,
      "a_to_b_moe_90": 1149,
      "b_to_a": 842,
      "b_to_a_moe_90": 588,
      "gross_exchange": 2219,
      "directional_balance": 535,
      "dominant_direction": "Georgia to Minnesota",
      "main_flow": 1377,
      "reverse_flow": 842,
      "reverse_share_of_main": 0.6115
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 2035,
      "a_to_b_moe_90": 1105,
      "b_to_a": 170,
      "b_to_a_moe_90": 183,
      "gross_exchange": 2205,
      "directional_balance": 1865,
      "dominant_direction": "Kentucky to South Carolina",
      "main_flow": 2035,
      "reverse_flow": 170,
      "reverse_share_of_main": 0.0835
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 811,
      "a_to_b_moe_90": 734,
      "b_to_a": 1391,
      "b_to_a_moe_90": 586,
      "gross_exchange": 2202,
      "directional_balance": 580,
      "dominant_direction": "Ohio to Connecticut",
      "main_flow": 1391,
      "reverse_flow": 811,
      "reverse_share_of_main": 0.583
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 1239,
      "a_to_b_moe_90": 878,
      "b_to_a": 947,
      "b_to_a_moe_90": 798,
      "gross_exchange": 2186,
      "directional_balance": 292,
      "dominant_direction": "Missouri to Nevada",
      "main_flow": 1239,
      "reverse_flow": 947,
      "reverse_share_of_main": 0.7643
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1335,
      "a_to_b_moe_90": 938,
      "b_to_a": 850,
      "b_to_a_moe_90": 690,
      "gross_exchange": 2185,
      "directional_balance": 485,
      "dominant_direction": "Ohio to Oklahoma",
      "main_flow": 1335,
      "reverse_flow": 850,
      "reverse_share_of_main": 0.6367
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 1946,
      "a_to_b_moe_90": 1876,
      "b_to_a": 234,
      "b_to_a_moe_90": 253,
      "gross_exchange": 2180,
      "directional_balance": 1712,
      "dominant_direction": "Arizona to Wyoming",
      "main_flow": 1946,
      "reverse_flow": 234,
      "reverse_share_of_main": 0.1202
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1426,
      "a_to_b_moe_90": 1083,
      "b_to_a": 744,
      "b_to_a_moe_90": 479,
      "gross_exchange": 2170,
      "directional_balance": 682,
      "dominant_direction": "Connecticut to Washington",
      "main_flow": 1426,
      "reverse_flow": 744,
      "reverse_share_of_main": 0.5217
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 746,
      "a_to_b_moe_90": 551,
      "b_to_a": 1422,
      "b_to_a_moe_90": 767,
      "gross_exchange": 2168,
      "directional_balance": 676,
      "dominant_direction": "Oregon to Michigan",
      "main_flow": 1422,
      "reverse_flow": 746,
      "reverse_share_of_main": 0.5246
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 464,
      "a_to_b_moe_90": 539,
      "b_to_a": 1690,
      "b_to_a_moe_90": 1717,
      "gross_exchange": 2154,
      "directional_balance": 1226,
      "dominant_direction": "Pennsylvania to Hawaii",
      "main_flow": 1690,
      "reverse_flow": 464,
      "reverse_share_of_main": 0.2746
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1651,
      "a_to_b_moe_90": 1720,
      "b_to_a": 486,
      "b_to_a_moe_90": 695,
      "gross_exchange": 2137,
      "directional_balance": 1165,
      "dominant_direction": "Maine to Oklahoma",
      "main_flow": 1651,
      "reverse_flow": 486,
      "reverse_share_of_main": 0.2944
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 1835,
      "a_to_b_moe_90": 1352,
      "b_to_a": 280,
      "b_to_a_moe_90": 264,
      "gross_exchange": 2115,
      "directional_balance": 1555,
      "dominant_direction": "Connecticut to Maryland",
      "main_flow": 1835,
      "reverse_flow": 280,
      "reverse_share_of_main": 0.1526
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 1113,
      "a_to_b_moe_90": 936,
      "b_to_a": 1002,
      "b_to_a_moe_90": 770,
      "gross_exchange": 2115,
      "directional_balance": 111,
      "dominant_direction": "Michigan to Nevada",
      "main_flow": 1113,
      "reverse_flow": 1002,
      "reverse_share_of_main": 0.9003
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 388,
      "a_to_b_moe_90": 502,
      "b_to_a": 1705,
      "b_to_a_moe_90": 842,
      "gross_exchange": 2093,
      "directional_balance": 1317,
      "dominant_direction": "Louisiana to Arizona",
      "main_flow": 1705,
      "reverse_flow": 388,
      "reverse_share_of_main": 0.2276
    },
    {
      "state_a": "South Dakota",
      "state_a_fips": "46",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1026,
      "a_to_b_moe_90": 880,
      "b_to_a": 1053,
      "b_to_a_moe_90": 955,
      "gross_exchange": 2079,
      "directional_balance": 27,
      "dominant_direction": "Washington to South Dakota",
      "main_flow": 1053,
      "reverse_flow": 1026,
      "reverse_share_of_main": 0.9744
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 722,
      "a_to_b_moe_90": 488,
      "b_to_a": 1346,
      "b_to_a_moe_90": 1309,
      "gross_exchange": 2068,
      "directional_balance": 624,
      "dominant_direction": "Ohio to Hawaii",
      "main_flow": 1346,
      "reverse_flow": 722,
      "reverse_share_of_main": 0.5364
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 543,
      "a_to_b_moe_90": 619,
      "b_to_a": 1524,
      "b_to_a_moe_90": 1087,
      "gross_exchange": 2067,
      "directional_balance": 981,
      "dominant_direction": "Tennessee to Alaska",
      "main_flow": 1524,
      "reverse_flow": 543,
      "reverse_share_of_main": 0.3563
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 1000,
      "a_to_b_moe_90": 625,
      "b_to_a": 1064,
      "b_to_a_moe_90": 1554,
      "gross_exchange": 2064,
      "directional_balance": 64,
      "dominant_direction": "Oklahoma to Maryland",
      "main_flow": 1064,
      "reverse_flow": 1000,
      "reverse_share_of_main": 0.9398
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 1019,
      "a_to_b_moe_90": 865,
      "b_to_a": 1036,
      "b_to_a_moe_90": 642,
      "gross_exchange": 2055,
      "directional_balance": 17,
      "dominant_direction": "Hawaii to Alaska",
      "main_flow": 1036,
      "reverse_flow": 1019,
      "reverse_share_of_main": 0.9836
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 1552,
      "a_to_b_moe_90": 1018,
      "b_to_a": 496,
      "b_to_a_moe_90": 471,
      "gross_exchange": 2048,
      "directional_balance": 1056,
      "dominant_direction": "Minnesota to Montana",
      "main_flow": 1552,
      "reverse_flow": 496,
      "reverse_share_of_main": 0.3196
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1498,
      "a_to_b_moe_90": 1015,
      "b_to_a": 549,
      "b_to_a_moe_90": 424,
      "gross_exchange": 2047,
      "directional_balance": 949,
      "dominant_direction": "New Jersey to Washington",
      "main_flow": 1498,
      "reverse_flow": 549,
      "reverse_share_of_main": 0.3665
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 1419,
      "a_to_b_moe_90": 971,
      "b_to_a": 624,
      "b_to_a_moe_90": 674,
      "gross_exchange": 2043,
      "directional_balance": 795,
      "dominant_direction": "Nebraska to Ohio",
      "main_flow": 1419,
      "reverse_flow": 624,
      "reverse_share_of_main": 0.4397
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 1214,
      "a_to_b_moe_90": 1030,
      "b_to_a": 829,
      "b_to_a_moe_90": 502,
      "gross_exchange": 2043,
      "directional_balance": 385,
      "dominant_direction": "Iowa to Washington",
      "main_flow": 1214,
      "reverse_flow": 829,
      "reverse_share_of_main": 0.6829
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 763,
      "a_to_b_moe_90": 582,
      "b_to_a": 1277,
      "b_to_a_moe_90": 1077,
      "gross_exchange": 2040,
      "directional_balance": 514,
      "dominant_direction": "Virginia to Oklahoma",
      "main_flow": 1277,
      "reverse_flow": 763,
      "reverse_share_of_main": 0.5975
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 1074,
      "a_to_b_moe_90": 958,
      "b_to_a": 964,
      "b_to_a_moe_90": 636,
      "gross_exchange": 2038,
      "directional_balance": 110,
      "dominant_direction": "Rhode Island to Texas",
      "main_flow": 1074,
      "reverse_flow": 964,
      "reverse_share_of_main": 0.8976
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 490,
      "a_to_b_moe_90": 420,
      "b_to_a": 1547,
      "b_to_a_moe_90": 986,
      "gross_exchange": 2037,
      "directional_balance": 1057,
      "dominant_direction": "Ohio to District of Columbia",
      "main_flow": 1547,
      "reverse_flow": 490,
      "reverse_share_of_main": 0.3167
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 875,
      "a_to_b_moe_90": 768,
      "b_to_a": 1157,
      "b_to_a_moe_90": 624,
      "gross_exchange": 2032,
      "directional_balance": 282,
      "dominant_direction": "Virginia to Maine",
      "main_flow": 1157,
      "reverse_flow": 875,
      "reverse_share_of_main": 0.7563
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 211,
      "a_to_b_moe_90": 222,
      "b_to_a": 1815,
      "b_to_a_moe_90": 937,
      "gross_exchange": 2026,
      "directional_balance": 1604,
      "dominant_direction": "South Dakota to Arizona",
      "main_flow": 1815,
      "reverse_flow": 211,
      "reverse_share_of_main": 0.1163
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 1941,
      "a_to_b_moe_90": 1580,
      "b_to_a": 79,
      "b_to_a_moe_90": 130,
      "gross_exchange": 2020,
      "directional_balance": 1862,
      "dominant_direction": "Kansas to Michigan",
      "main_flow": 1941,
      "reverse_flow": 79,
      "reverse_share_of_main": 0.0407
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 1662,
      "a_to_b_moe_90": 1154,
      "b_to_a": 337,
      "b_to_a_moe_90": 410,
      "gross_exchange": 1999,
      "directional_balance": 1325,
      "dominant_direction": "Minnesota to Pennsylvania",
      "main_flow": 1662,
      "reverse_flow": 337,
      "reverse_share_of_main": 0.2028
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 522,
      "a_to_b_moe_90": 362,
      "b_to_a": 1477,
      "b_to_a_moe_90": 751,
      "gross_exchange": 1999,
      "directional_balance": 955,
      "dominant_direction": "New York to Delaware",
      "main_flow": 1477,
      "reverse_flow": 522,
      "reverse_share_of_main": 0.3534
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 590,
      "a_to_b_moe_90": 484,
      "b_to_a": 1407,
      "b_to_a_moe_90": 1169,
      "gross_exchange": 1997,
      "directional_balance": 817,
      "dominant_direction": "Ohio to Minnesota",
      "main_flow": 1407,
      "reverse_flow": 590,
      "reverse_share_of_main": 0.4193
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 1377,
      "a_to_b_moe_90": 958,
      "b_to_a": 620,
      "b_to_a_moe_90": 650,
      "gross_exchange": 1997,
      "directional_balance": 757,
      "dominant_direction": "Montana to North Dakota",
      "main_flow": 1377,
      "reverse_flow": 620,
      "reverse_share_of_main": 0.4503
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 784,
      "a_to_b_moe_90": 553,
      "b_to_a": 1204,
      "b_to_a_moe_90": 930,
      "gross_exchange": 1988,
      "directional_balance": 420,
      "dominant_direction": "Rhode Island to New Hampshire",
      "main_flow": 1204,
      "reverse_flow": 784,
      "reverse_share_of_main": 0.6512
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1173,
      "a_to_b_moe_90": 941,
      "b_to_a": 815,
      "b_to_a_moe_90": 625,
      "gross_exchange": 1988,
      "directional_balance": 358,
      "dominant_direction": "Hawaii to Oregon",
      "main_flow": 1173,
      "reverse_flow": 815,
      "reverse_share_of_main": 0.6948
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 1603,
      "a_to_b_moe_90": 1334,
      "b_to_a": 384,
      "b_to_a_moe_90": 380,
      "gross_exchange": 1987,
      "directional_balance": 1219,
      "dominant_direction": "Maryland to Vermont",
      "main_flow": 1603,
      "reverse_flow": 384,
      "reverse_share_of_main": 0.2396
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1106,
      "a_to_b_moe_90": 1173,
      "b_to_a": 881,
      "b_to_a_moe_90": 685,
      "gross_exchange": 1987,
      "directional_balance": 225,
      "dominant_direction": "Nebraska to Virginia",
      "main_flow": 1106,
      "reverse_flow": 881,
      "reverse_share_of_main": 0.7966
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 908,
      "a_to_b_moe_90": 1273,
      "b_to_a": 1072,
      "b_to_a_moe_90": 1424,
      "gross_exchange": 1980,
      "directional_balance": 164,
      "dominant_direction": "Hawaii to Alabama",
      "main_flow": 1072,
      "reverse_flow": 908,
      "reverse_share_of_main": 0.847
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 1405,
      "a_to_b_moe_90": 1527,
      "b_to_a": 572,
      "b_to_a_moe_90": 689,
      "gross_exchange": 1977,
      "directional_balance": 833,
      "dominant_direction": "Alaska to Minnesota",
      "main_flow": 1405,
      "reverse_flow": 572,
      "reverse_share_of_main": 0.4071
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 1906,
      "a_to_b_moe_90": 2588,
      "b_to_a": 67,
      "b_to_a_moe_90": 93,
      "gross_exchange": 1973,
      "directional_balance": 1839,
      "dominant_direction": "Alaska to Montana",
      "main_flow": 1906,
      "reverse_flow": 67,
      "reverse_share_of_main": 0.0352
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 414,
      "a_to_b_moe_90": 405,
      "b_to_a": 1548,
      "b_to_a_moe_90": 1602,
      "gross_exchange": 1962,
      "directional_balance": 1134,
      "dominant_direction": "Washington to Arkansas",
      "main_flow": 1548,
      "reverse_flow": 414,
      "reverse_share_of_main": 0.2674
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 929,
      "a_to_b_moe_90": 975,
      "b_to_a": 1031,
      "b_to_a_moe_90": 1164,
      "gross_exchange": 1960,
      "directional_balance": 102,
      "dominant_direction": "Maryland to Louisiana",
      "main_flow": 1031,
      "reverse_flow": 929,
      "reverse_share_of_main": 0.9011
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 979,
      "a_to_b_moe_90": 766,
      "b_to_a": 978,
      "b_to_a_moe_90": 571,
      "gross_exchange": 1957,
      "directional_balance": 1,
      "dominant_direction": "Nevada to South Carolina",
      "main_flow": 979,
      "reverse_flow": 978,
      "reverse_share_of_main": 0.999
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 794,
      "a_to_b_moe_90": 605,
      "b_to_a": 1162,
      "b_to_a_moe_90": 662,
      "gross_exchange": 1956,
      "directional_balance": 368,
      "dominant_direction": "Wyoming to California",
      "main_flow": 1162,
      "reverse_flow": 794,
      "reverse_share_of_main": 0.6833
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 1185,
      "a_to_b_moe_90": 1247,
      "b_to_a": 769,
      "b_to_a_moe_90": 686,
      "gross_exchange": 1954,
      "directional_balance": 416,
      "dominant_direction": "Nevada to Wyoming",
      "main_flow": 1185,
      "reverse_flow": 769,
      "reverse_share_of_main": 0.6489
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1104,
      "a_to_b_moe_90": 855,
      "b_to_a": 847,
      "b_to_a_moe_90": 729,
      "gross_exchange": 1951,
      "directional_balance": 257,
      "dominant_direction": "New Mexico to Virginia",
      "main_flow": 1104,
      "reverse_flow": 847,
      "reverse_share_of_main": 0.7672
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 1434,
      "a_to_b_moe_90": 646,
      "b_to_a": 511,
      "b_to_a_moe_90": 673,
      "gross_exchange": 1945,
      "directional_balance": 923,
      "dominant_direction": "New Jersey to Rhode Island",
      "main_flow": 1434,
      "reverse_flow": 511,
      "reverse_share_of_main": 0.3563
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 1196,
      "a_to_b_moe_90": 1090,
      "b_to_a": 721,
      "b_to_a_moe_90": 554,
      "gross_exchange": 1917,
      "directional_balance": 475,
      "dominant_direction": "Connecticut to Vermont",
      "main_flow": 1196,
      "reverse_flow": 721,
      "reverse_share_of_main": 0.6028
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 1124,
      "a_to_b_moe_90": 947,
      "b_to_a": 789,
      "b_to_a_moe_90": 969,
      "gross_exchange": 1913,
      "directional_balance": 335,
      "dominant_direction": "Mississippi to Ohio",
      "main_flow": 1124,
      "reverse_flow": 789,
      "reverse_share_of_main": 0.702
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 221,
      "a_to_b_moe_90": 357,
      "b_to_a": 1691,
      "b_to_a_moe_90": 2193,
      "gross_exchange": 1912,
      "directional_balance": 1470,
      "dominant_direction": "Tennessee to Delaware",
      "main_flow": 1691,
      "reverse_flow": 221,
      "reverse_share_of_main": 0.1307
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 850,
      "a_to_b_moe_90": 706,
      "b_to_a": 1053,
      "b_to_a_moe_90": 841,
      "gross_exchange": 1903,
      "directional_balance": 203,
      "dominant_direction": "Ohio to Montana",
      "main_flow": 1053,
      "reverse_flow": 850,
      "reverse_share_of_main": 0.8072
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1087,
      "a_to_b_moe_90": 995,
      "b_to_a": 813,
      "b_to_a_moe_90": 974,
      "gross_exchange": 1900,
      "directional_balance": 274,
      "dominant_direction": "Indiana to Oregon",
      "main_flow": 1087,
      "reverse_flow": 813,
      "reverse_share_of_main": 0.7479
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1723,
      "a_to_b_moe_90": 1156,
      "b_to_a": 165,
      "b_to_a_moe_90": 168,
      "gross_exchange": 1888,
      "directional_balance": 1558,
      "dominant_direction": "Michigan to Utah",
      "main_flow": 1723,
      "reverse_flow": 165,
      "reverse_share_of_main": 0.0958
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 1689,
      "a_to_b_moe_90": 1158,
      "b_to_a": 185,
      "b_to_a_moe_90": 235,
      "gross_exchange": 1874,
      "directional_balance": 1504,
      "dominant_direction": "Connecticut to District of Columbia",
      "main_flow": 1689,
      "reverse_flow": 185,
      "reverse_share_of_main": 0.1095
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 1562,
      "a_to_b_moe_90": 1231,
      "b_to_a": 312,
      "b_to_a_moe_90": 308,
      "gross_exchange": 1874,
      "directional_balance": 1250,
      "dominant_direction": "California to New Hampshire",
      "main_flow": 1562,
      "reverse_flow": 312,
      "reverse_share_of_main": 0.1997
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Georgia",
      "state_b_fips": "13",
      "a_to_b": 839,
      "a_to_b_moe_90": 768,
      "b_to_a": 1035,
      "b_to_a_moe_90": 889,
      "gross_exchange": 1874,
      "directional_balance": 196,
      "dominant_direction": "Georgia to District of Columbia",
      "main_flow": 1035,
      "reverse_flow": 839,
      "reverse_share_of_main": 0.8106
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1124,
      "a_to_b_moe_90": 682,
      "b_to_a": 749,
      "b_to_a_moe_90": 604,
      "gross_exchange": 1873,
      "directional_balance": 375,
      "dominant_direction": "Illinois to Oregon",
      "main_flow": 1124,
      "reverse_flow": 749,
      "reverse_share_of_main": 0.6664
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1209,
      "a_to_b_moe_90": 935,
      "b_to_a": 653,
      "b_to_a_moe_90": 558,
      "gross_exchange": 1862,
      "directional_balance": 556,
      "dominant_direction": "Connecticut to Tennessee",
      "main_flow": 1209,
      "reverse_flow": 653,
      "reverse_share_of_main": 0.5401
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1207,
      "a_to_b_moe_90": 955,
      "b_to_a": 654,
      "b_to_a_moe_90": 536,
      "gross_exchange": 1861,
      "directional_balance": 553,
      "dominant_direction": "Delaware to South Carolina",
      "main_flow": 1207,
      "reverse_flow": 654,
      "reverse_share_of_main": 0.5418
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 651,
      "a_to_b_moe_90": 607,
      "b_to_a": 1204,
      "b_to_a_moe_90": 1172,
      "gross_exchange": 1855,
      "directional_balance": 553,
      "dominant_direction": "Iowa to Indiana",
      "main_flow": 1204,
      "reverse_flow": 651,
      "reverse_share_of_main": 0.5407
    },
    {
      "state_a": "Virginia",
      "state_a_fips": "51",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 724,
      "a_to_b_moe_90": 789,
      "b_to_a": 1124,
      "b_to_a_moe_90": 572,
      "gross_exchange": 1848,
      "directional_balance": 400,
      "dominant_direction": "Wisconsin to Virginia",
      "main_flow": 1124,
      "reverse_flow": 724,
      "reverse_share_of_main": 0.6441
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 624,
      "a_to_b_moe_90": 533,
      "b_to_a": 1223,
      "b_to_a_moe_90": 1336,
      "gross_exchange": 1847,
      "directional_balance": 599,
      "dominant_direction": "Texas to Delaware",
      "main_flow": 1223,
      "reverse_flow": 624,
      "reverse_share_of_main": 0.5102
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1027,
      "a_to_b_moe_90": 1053,
      "b_to_a": 811,
      "b_to_a_moe_90": 682,
      "gross_exchange": 1838,
      "directional_balance": 216,
      "dominant_direction": "Kansas to Virginia",
      "main_flow": 1027,
      "reverse_flow": 811,
      "reverse_share_of_main": 0.7897
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 957,
      "a_to_b_moe_90": 1114,
      "b_to_a": 879,
      "b_to_a_moe_90": 817,
      "gross_exchange": 1836,
      "directional_balance": 78,
      "dominant_direction": "Arkansas to Virginia",
      "main_flow": 957,
      "reverse_flow": 879,
      "reverse_share_of_main": 0.9185
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 1660,
      "a_to_b_moe_90": 1395,
      "b_to_a": 170,
      "b_to_a_moe_90": 215,
      "gross_exchange": 1830,
      "directional_balance": 1490,
      "dominant_direction": "Alaska to Ohio",
      "main_flow": 1660,
      "reverse_flow": 170,
      "reverse_share_of_main": 0.1024
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 1348,
      "a_to_b_moe_90": 2016,
      "b_to_a": 480,
      "b_to_a_moe_90": 406,
      "gross_exchange": 1828,
      "directional_balance": 868,
      "dominant_direction": "Arizona to Maine",
      "main_flow": 1348,
      "reverse_flow": 480,
      "reverse_share_of_main": 0.3561
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 1651,
      "a_to_b_moe_90": 1602,
      "b_to_a": 172,
      "b_to_a_moe_90": 229,
      "gross_exchange": 1823,
      "directional_balance": 1479,
      "dominant_direction": "Hawaii to Montana",
      "main_flow": 1651,
      "reverse_flow": 172,
      "reverse_share_of_main": 0.1042
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 1280,
      "a_to_b_moe_90": 1204,
      "b_to_a": 539,
      "b_to_a_moe_90": 465,
      "gross_exchange": 1819,
      "directional_balance": 741,
      "dominant_direction": "Alaska to Oregon",
      "main_flow": 1280,
      "reverse_flow": 539,
      "reverse_share_of_main": 0.4211
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 640,
      "a_to_b_moe_90": 953,
      "b_to_a": 1177,
      "b_to_a_moe_90": 948,
      "gross_exchange": 1817,
      "directional_balance": 537,
      "dominant_direction": "South Dakota to Florida",
      "main_flow": 1177,
      "reverse_flow": 640,
      "reverse_share_of_main": 0.5438
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 491,
      "a_to_b_moe_90": 474,
      "b_to_a": 1319,
      "b_to_a_moe_90": 1035,
      "gross_exchange": 1810,
      "directional_balance": 828,
      "dominant_direction": "Missouri to Hawaii",
      "main_flow": 1319,
      "reverse_flow": 491,
      "reverse_share_of_main": 0.3723
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 228,
      "a_to_b_moe_90": 288,
      "b_to_a": 1580,
      "b_to_a_moe_90": 2121,
      "gross_exchange": 1808,
      "directional_balance": 1352,
      "dominant_direction": "Wyoming to North Carolina",
      "main_flow": 1580,
      "reverse_flow": 228,
      "reverse_share_of_main": 0.1443
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 370,
      "a_to_b_moe_90": 358,
      "b_to_a": 1428,
      "b_to_a_moe_90": 1304,
      "gross_exchange": 1798,
      "directional_balance": 1058,
      "dominant_direction": "Maryland to Maine",
      "main_flow": 1428,
      "reverse_flow": 370,
      "reverse_share_of_main": 0.2591
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 1795,
      "b_to_a_moe_90": 1370,
      "gross_exchange": 1795,
      "directional_balance": 1795,
      "dominant_direction": "Pennsylvania to Mississippi",
      "main_flow": 1795,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 468,
      "a_to_b_moe_90": 638,
      "b_to_a": 1323,
      "b_to_a_moe_90": 1534,
      "gross_exchange": 1791,
      "directional_balance": 855,
      "dominant_direction": "Nevada to Kansas",
      "main_flow": 1323,
      "reverse_flow": 468,
      "reverse_share_of_main": 0.3537
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 214,
      "a_to_b_moe_90": 303,
      "b_to_a": 1572,
      "b_to_a_moe_90": 1483,
      "gross_exchange": 1786,
      "directional_balance": 1358,
      "dominant_direction": "West Virginia to Illinois",
      "main_flow": 1572,
      "reverse_flow": 214,
      "reverse_share_of_main": 0.1361
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 1600,
      "a_to_b_moe_90": 2093,
      "b_to_a": 181,
      "b_to_a_moe_90": 122,
      "gross_exchange": 1781,
      "directional_balance": 1419,
      "dominant_direction": "District of Columbia to Nevada",
      "main_flow": 1600,
      "reverse_flow": 181,
      "reverse_share_of_main": 0.1131
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1087,
      "a_to_b_moe_90": 826,
      "b_to_a": 683,
      "b_to_a_moe_90": 645,
      "gross_exchange": 1770,
      "directional_balance": 404,
      "dominant_direction": "Oregon to Tennessee",
      "main_flow": 1087,
      "reverse_flow": 683,
      "reverse_share_of_main": 0.6283
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 665,
      "a_to_b_moe_90": 620,
      "b_to_a": 1102,
      "b_to_a_moe_90": 920,
      "gross_exchange": 1767,
      "directional_balance": 437,
      "dominant_direction": "Ohio to New Hampshire",
      "main_flow": 1102,
      "reverse_flow": 665,
      "reverse_share_of_main": 0.6034
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 746,
      "a_to_b_moe_90": 570,
      "b_to_a": 1009,
      "b_to_a_moe_90": 960,
      "gross_exchange": 1755,
      "directional_balance": 263,
      "dominant_direction": "Wisconsin to Nebraska",
      "main_flow": 1009,
      "reverse_flow": 746,
      "reverse_share_of_main": 0.7393
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 998,
      "a_to_b_moe_90": 727,
      "b_to_a": 754,
      "b_to_a_moe_90": 643,
      "gross_exchange": 1752,
      "directional_balance": 244,
      "dominant_direction": "Idaho to Pennsylvania",
      "main_flow": 998,
      "reverse_flow": 754,
      "reverse_share_of_main": 0.7555
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1277,
      "a_to_b_moe_90": 744,
      "b_to_a": 461,
      "b_to_a_moe_90": 457,
      "gross_exchange": 1738,
      "directional_balance": 816,
      "dominant_direction": "New Jersey to Tennessee",
      "main_flow": 1277,
      "reverse_flow": 461,
      "reverse_share_of_main": 0.361
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 730,
      "a_to_b_moe_90": 708,
      "b_to_a": 1002,
      "b_to_a_moe_90": 676,
      "gross_exchange": 1732,
      "directional_balance": 272,
      "dominant_direction": "Utah to Montana",
      "main_flow": 1002,
      "reverse_flow": 730,
      "reverse_share_of_main": 0.7285
    },
    {
      "state_a": "Texas",
      "state_a_fips": "48",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 804,
      "a_to_b_moe_90": 1052,
      "b_to_a": 926,
      "b_to_a_moe_90": 855,
      "gross_exchange": 1730,
      "directional_balance": 122,
      "dominant_direction": "Vermont to Texas",
      "main_flow": 926,
      "reverse_flow": 804,
      "reverse_share_of_main": 0.8683
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 984,
      "a_to_b_moe_90": 665,
      "b_to_a": 738,
      "b_to_a_moe_90": 518,
      "gross_exchange": 1722,
      "directional_balance": 246,
      "dominant_direction": "Connecticut to Maine",
      "main_flow": 984,
      "reverse_flow": 738,
      "reverse_share_of_main": 0.75
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 754,
      "a_to_b_moe_90": 809,
      "b_to_a": 959,
      "b_to_a_moe_90": 684,
      "gross_exchange": 1713,
      "directional_balance": 205,
      "dominant_direction": "Wyoming to Illinois",
      "main_flow": 959,
      "reverse_flow": 754,
      "reverse_share_of_main": 0.7862
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 965,
      "a_to_b_moe_90": 1398,
      "b_to_a": 741,
      "b_to_a_moe_90": 618,
      "gross_exchange": 1706,
      "directional_balance": 224,
      "dominant_direction": "Maryland to Wisconsin",
      "main_flow": 965,
      "reverse_flow": 741,
      "reverse_share_of_main": 0.7679
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 821,
      "a_to_b_moe_90": 684,
      "b_to_a": 882,
      "b_to_a_moe_90": 820,
      "gross_exchange": 1703,
      "directional_balance": 61,
      "dominant_direction": "Nevada to Connecticut",
      "main_flow": 882,
      "reverse_flow": 821,
      "reverse_share_of_main": 0.9308
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 769,
      "a_to_b_moe_90": 655,
      "b_to_a": 929,
      "b_to_a_moe_90": 852,
      "gross_exchange": 1698,
      "directional_balance": 160,
      "dominant_direction": "Indiana to Connecticut",
      "main_flow": 929,
      "reverse_flow": 769,
      "reverse_share_of_main": 0.8278
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 1396,
      "a_to_b_moe_90": 1021,
      "b_to_a": 289,
      "b_to_a_moe_90": 497,
      "gross_exchange": 1685,
      "directional_balance": 1107,
      "dominant_direction": "Idaho to Indiana",
      "main_flow": 1396,
      "reverse_flow": 289,
      "reverse_share_of_main": 0.207
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1303,
      "a_to_b_moe_90": 1035,
      "b_to_a": 380,
      "b_to_a_moe_90": 432,
      "gross_exchange": 1683,
      "directional_balance": 923,
      "dominant_direction": "New Hampshire to South Carolina",
      "main_flow": 1303,
      "reverse_flow": 380,
      "reverse_share_of_main": 0.2916
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 444,
      "a_to_b_moe_90": 599,
      "b_to_a": 1238,
      "b_to_a_moe_90": 704,
      "gross_exchange": 1682,
      "directional_balance": 794,
      "dominant_direction": "Oklahoma to Michigan",
      "main_flow": 1238,
      "reverse_flow": 444,
      "reverse_share_of_main": 0.3586
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 565,
      "a_to_b_moe_90": 664,
      "b_to_a": 1115,
      "b_to_a_moe_90": 1153,
      "gross_exchange": 1680,
      "directional_balance": 550,
      "dominant_direction": "Pennsylvania to Kansas",
      "main_flow": 1115,
      "reverse_flow": 565,
      "reverse_share_of_main": 0.5067
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 863,
      "a_to_b_moe_90": 845,
      "b_to_a": 816,
      "b_to_a_moe_90": 798,
      "gross_exchange": 1679,
      "directional_balance": 47,
      "dominant_direction": "Indiana to Nevada",
      "main_flow": 863,
      "reverse_flow": 816,
      "reverse_share_of_main": 0.9455
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 930,
      "a_to_b_moe_90": 588,
      "b_to_a": 741,
      "b_to_a_moe_90": 519,
      "gross_exchange": 1671,
      "directional_balance": 189,
      "dominant_direction": "Kansas to Kentucky",
      "main_flow": 930,
      "reverse_flow": 741,
      "reverse_share_of_main": 0.7968
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 129,
      "a_to_b_moe_90": 217,
      "b_to_a": 1507,
      "b_to_a_moe_90": 964,
      "gross_exchange": 1636,
      "directional_balance": 1378,
      "dominant_direction": "New Jersey to Nevada",
      "main_flow": 1507,
      "reverse_flow": 129,
      "reverse_share_of_main": 0.0856
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 664,
      "a_to_b_moe_90": 473,
      "b_to_a": 964,
      "b_to_a_moe_90": 689,
      "gross_exchange": 1628,
      "directional_balance": 300,
      "dominant_direction": "West Virginia to Michigan",
      "main_flow": 964,
      "reverse_flow": 664,
      "reverse_share_of_main": 0.6888
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 1128,
      "a_to_b_moe_90": 733,
      "b_to_a": 482,
      "b_to_a_moe_90": 526,
      "gross_exchange": 1610,
      "directional_balance": 646,
      "dominant_direction": "Idaho to Missouri",
      "main_flow": 1128,
      "reverse_flow": 482,
      "reverse_share_of_main": 0.4273
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 1058,
      "a_to_b_moe_90": 911,
      "b_to_a": 547,
      "b_to_a_moe_90": 574,
      "gross_exchange": 1605,
      "directional_balance": 511,
      "dominant_direction": "Alaska to Virginia",
      "main_flow": 1058,
      "reverse_flow": 547,
      "reverse_share_of_main": 0.517
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 556,
      "a_to_b_moe_90": 530,
      "b_to_a": 1046,
      "b_to_a_moe_90": 1355,
      "gross_exchange": 1602,
      "directional_balance": 490,
      "dominant_direction": "Oregon to Arkansas",
      "main_flow": 1046,
      "reverse_flow": 556,
      "reverse_share_of_main": 0.5315
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 705,
      "a_to_b_moe_90": 649,
      "b_to_a": 894,
      "b_to_a_moe_90": 590,
      "gross_exchange": 1599,
      "directional_balance": 189,
      "dominant_direction": "Minnesota to Maryland",
      "main_flow": 894,
      "reverse_flow": 705,
      "reverse_share_of_main": 0.7886
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 1466,
      "a_to_b_moe_90": 2015,
      "b_to_a": 131,
      "b_to_a_moe_90": 162,
      "gross_exchange": 1597,
      "directional_balance": 1335,
      "dominant_direction": "Idaho to Tennessee",
      "main_flow": 1466,
      "reverse_flow": 131,
      "reverse_share_of_main": 0.0894
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 1113,
      "a_to_b_moe_90": 924,
      "b_to_a": 481,
      "b_to_a_moe_90": 444,
      "gross_exchange": 1594,
      "directional_balance": 632,
      "dominant_direction": "Alabama to New Mexico",
      "main_flow": 1113,
      "reverse_flow": 481,
      "reverse_share_of_main": 0.4322
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 1430,
      "a_to_b_moe_90": 1078,
      "b_to_a": 162,
      "b_to_a_moe_90": 255,
      "gross_exchange": 1592,
      "directional_balance": 1268,
      "dominant_direction": "Florida to Montana",
      "main_flow": 1430,
      "reverse_flow": 162,
      "reverse_share_of_main": 0.1133
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 600,
      "a_to_b_moe_90": 692,
      "b_to_a": 990,
      "b_to_a_moe_90": 643,
      "gross_exchange": 1590,
      "directional_balance": 390,
      "dominant_direction": "North Dakota to Arizona",
      "main_flow": 990,
      "reverse_flow": 600,
      "reverse_share_of_main": 0.6061
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 860,
      "a_to_b_moe_90": 1228,
      "b_to_a": 729,
      "b_to_a_moe_90": 575,
      "gross_exchange": 1589,
      "directional_balance": 131,
      "dominant_direction": "New Mexico to Wisconsin",
      "main_flow": 860,
      "reverse_flow": 729,
      "reverse_share_of_main": 0.8477
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 496,
      "a_to_b_moe_90": 644,
      "b_to_a": 1087,
      "b_to_a_moe_90": 844,
      "gross_exchange": 1583,
      "directional_balance": 591,
      "dominant_direction": "Oklahoma to Alabama",
      "main_flow": 1087,
      "reverse_flow": 496,
      "reverse_share_of_main": 0.4563
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 1220,
      "a_to_b_moe_90": 908,
      "b_to_a": 362,
      "b_to_a_moe_90": 430,
      "gross_exchange": 1582,
      "directional_balance": 858,
      "dominant_direction": "Nevada to Wisconsin",
      "main_flow": 1220,
      "reverse_flow": 362,
      "reverse_share_of_main": 0.2967
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1397,
      "a_to_b_moe_90": 1160,
      "b_to_a": 180,
      "b_to_a_moe_90": 177,
      "gross_exchange": 1577,
      "directional_balance": 1217,
      "dominant_direction": "New Jersey to Utah",
      "main_flow": 1397,
      "reverse_flow": 180,
      "reverse_share_of_main": 0.1288
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1091,
      "a_to_b_moe_90": 1425,
      "b_to_a": 475,
      "b_to_a_moe_90": 678,
      "gross_exchange": 1566,
      "directional_balance": 616,
      "dominant_direction": "Nebraska to South Carolina",
      "main_flow": 1091,
      "reverse_flow": 475,
      "reverse_share_of_main": 0.4354
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 594,
      "a_to_b_moe_90": 656,
      "b_to_a": 971,
      "b_to_a_moe_90": 622,
      "gross_exchange": 1565,
      "directional_balance": 377,
      "dominant_direction": "Massachusetts to Arizona",
      "main_flow": 971,
      "reverse_flow": 594,
      "reverse_share_of_main": 0.6117
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 572,
      "a_to_b_moe_90": 663,
      "b_to_a": 990,
      "b_to_a_moe_90": 648,
      "gross_exchange": 1562,
      "directional_balance": 418,
      "dominant_direction": "Virginia to Mississippi",
      "main_flow": 990,
      "reverse_flow": 572,
      "reverse_share_of_main": 0.5778
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 359,
      "a_to_b_moe_90": 297,
      "b_to_a": 1201,
      "b_to_a_moe_90": 1731,
      "gross_exchange": 1560,
      "directional_balance": 842,
      "dominant_direction": "New York to Alaska",
      "main_flow": 1201,
      "reverse_flow": 359,
      "reverse_share_of_main": 0.2989
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 774,
      "a_to_b_moe_90": 786,
      "b_to_a": 786,
      "b_to_a_moe_90": 803,
      "gross_exchange": 1560,
      "directional_balance": 12,
      "dominant_direction": "Vermont to Georgia",
      "main_flow": 786,
      "reverse_flow": 774,
      "reverse_share_of_main": 0.9847
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 1177,
      "a_to_b_moe_90": 1151,
      "b_to_a": 375,
      "b_to_a_moe_90": 500,
      "gross_exchange": 1552,
      "directional_balance": 802,
      "dominant_direction": "Idaho to North Carolina",
      "main_flow": 1177,
      "reverse_flow": 375,
      "reverse_share_of_main": 0.3186
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 724,
      "a_to_b_moe_90": 649,
      "b_to_a": 819,
      "b_to_a_moe_90": 556,
      "gross_exchange": 1543,
      "directional_balance": 95,
      "dominant_direction": "Minnesota to Idaho",
      "main_flow": 819,
      "reverse_flow": 724,
      "reverse_share_of_main": 0.884
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 1103,
      "a_to_b_moe_90": 1417,
      "b_to_a": 436,
      "b_to_a_moe_90": 302,
      "gross_exchange": 1539,
      "directional_balance": 667,
      "dominant_direction": "California to Vermont",
      "main_flow": 1103,
      "reverse_flow": 436,
      "reverse_share_of_main": 0.3953
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 185,
      "a_to_b_moe_90": 212,
      "b_to_a": 1346,
      "b_to_a_moe_90": 1918,
      "gross_exchange": 1531,
      "directional_balance": 1161,
      "dominant_direction": "New Mexico to Michigan",
      "main_flow": 1346,
      "reverse_flow": 185,
      "reverse_share_of_main": 0.1374
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 739,
      "a_to_b_moe_90": 487,
      "b_to_a": 788,
      "b_to_a_moe_90": 711,
      "gross_exchange": 1527,
      "directional_balance": 49,
      "dominant_direction": "Maryland to Illinois",
      "main_flow": 788,
      "reverse_flow": 739,
      "reverse_share_of_main": 0.9378
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 877,
      "a_to_b_moe_90": 736,
      "b_to_a": 648,
      "b_to_a_moe_90": 639,
      "gross_exchange": 1525,
      "directional_balance": 229,
      "dominant_direction": "Rhode Island to Virginia",
      "main_flow": 877,
      "reverse_flow": 648,
      "reverse_share_of_main": 0.7389
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 713,
      "a_to_b_moe_90": 541,
      "b_to_a": 794,
      "b_to_a_moe_90": 513,
      "gross_exchange": 1507,
      "directional_balance": 81,
      "dominant_direction": "Missouri to Maryland",
      "main_flow": 794,
      "reverse_flow": 713,
      "reverse_share_of_main": 0.898
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 598,
      "a_to_b_moe_90": 539,
      "b_to_a": 900,
      "b_to_a_moe_90": 850,
      "gross_exchange": 1498,
      "directional_balance": 302,
      "dominant_direction": "Kentucky to Arkansas",
      "main_flow": 900,
      "reverse_flow": 598,
      "reverse_share_of_main": 0.6644
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1493,
      "a_to_b_moe_90": 1856,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1493,
      "directional_balance": 1493,
      "dominant_direction": "Oklahoma to South Carolina",
      "main_flow": 1493,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 1211,
      "a_to_b_moe_90": 1050,
      "b_to_a": 282,
      "b_to_a_moe_90": 340,
      "gross_exchange": 1493,
      "directional_balance": 929,
      "dominant_direction": "Nevada to South Dakota",
      "main_flow": 1211,
      "reverse_flow": 282,
      "reverse_share_of_main": 0.2329
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 1024,
      "a_to_b_moe_90": 851,
      "b_to_a": 465,
      "b_to_a_moe_90": 450,
      "gross_exchange": 1489,
      "directional_balance": 559,
      "dominant_direction": "Maine to Vermont",
      "main_flow": 1024,
      "reverse_flow": 465,
      "reverse_share_of_main": 0.4541
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 1348,
      "a_to_b_moe_90": 911,
      "b_to_a": 140,
      "b_to_a_moe_90": 252,
      "gross_exchange": 1488,
      "directional_balance": 1208,
      "dominant_direction": "Colorado to District of Columbia",
      "main_flow": 1348,
      "reverse_flow": 140,
      "reverse_share_of_main": 0.1039
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 763,
      "a_to_b_moe_90": 664,
      "b_to_a": 710,
      "b_to_a_moe_90": 482,
      "gross_exchange": 1473,
      "directional_balance": 53,
      "dominant_direction": "Missouri to New Jersey",
      "main_flow": 763,
      "reverse_flow": 710,
      "reverse_share_of_main": 0.9305
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 1461,
      "b_to_a_moe_90": 1379,
      "gross_exchange": 1461,
      "directional_balance": 1461,
      "dominant_direction": "Pennsylvania to Arkansas",
      "main_flow": 1461,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 142,
      "a_to_b_moe_90": 245,
      "b_to_a": 1314,
      "b_to_a_moe_90": 1021,
      "gross_exchange": 1456,
      "directional_balance": 1172,
      "dominant_direction": "Oregon to Mississippi",
      "main_flow": 1314,
      "reverse_flow": 142,
      "reverse_share_of_main": 0.1081
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 400,
      "a_to_b_moe_90": 503,
      "b_to_a": 1052,
      "b_to_a_moe_90": 987,
      "gross_exchange": 1452,
      "directional_balance": 652,
      "dominant_direction": "South Dakota to Oregon",
      "main_flow": 1052,
      "reverse_flow": 400,
      "reverse_share_of_main": 0.3802
    },
    {
      "state_a": "Washington",
      "state_a_fips": "53",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 896,
      "a_to_b_moe_90": 1016,
      "b_to_a": 547,
      "b_to_a_moe_90": 468,
      "gross_exchange": 1443,
      "directional_balance": 349,
      "dominant_direction": "Washington to Wyoming",
      "main_flow": 896,
      "reverse_flow": 547,
      "reverse_share_of_main": 0.6105
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 858,
      "a_to_b_moe_90": 653,
      "b_to_a": 577,
      "b_to_a_moe_90": 489,
      "gross_exchange": 1435,
      "directional_balance": 281,
      "dominant_direction": "Indiana to Massachusetts",
      "main_flow": 858,
      "reverse_flow": 577,
      "reverse_share_of_main": 0.6725
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 229,
      "a_to_b_moe_90": 324,
      "b_to_a": 1202,
      "b_to_a_moe_90": 1062,
      "gross_exchange": 1431,
      "directional_balance": 973,
      "dominant_direction": "Oklahoma to North Dakota",
      "main_flow": 1202,
      "reverse_flow": 229,
      "reverse_share_of_main": 0.1905
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 776,
      "a_to_b_moe_90": 917,
      "b_to_a": 631,
      "b_to_a_moe_90": 681,
      "gross_exchange": 1407,
      "directional_balance": 145,
      "dominant_direction": "Oklahoma to Oregon",
      "main_flow": 776,
      "reverse_flow": 631,
      "reverse_share_of_main": 0.8131
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 819,
      "a_to_b_moe_90": 759,
      "b_to_a": 584,
      "b_to_a_moe_90": 465,
      "gross_exchange": 1403,
      "directional_balance": 235,
      "dominant_direction": "Idaho to Ohio",
      "main_flow": 819,
      "reverse_flow": 584,
      "reverse_share_of_main": 0.7131
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 1225,
      "a_to_b_moe_90": 1463,
      "b_to_a": 172,
      "b_to_a_moe_90": 241,
      "gross_exchange": 1397,
      "directional_balance": 1053,
      "dominant_direction": "Kansas to Wyoming",
      "main_flow": 1225,
      "reverse_flow": 172,
      "reverse_share_of_main": 0.1404
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 488,
      "a_to_b_moe_90": 461,
      "b_to_a": 904,
      "b_to_a_moe_90": 1080,
      "gross_exchange": 1392,
      "directional_balance": 416,
      "dominant_direction": "Indiana to Arkansas",
      "main_flow": 904,
      "reverse_flow": 488,
      "reverse_share_of_main": 0.5398
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 644,
      "a_to_b_moe_90": 616,
      "b_to_a": 743,
      "b_to_a_moe_90": 1032,
      "gross_exchange": 1387,
      "directional_balance": 99,
      "dominant_direction": "Mississippi to Colorado",
      "main_flow": 743,
      "reverse_flow": 644,
      "reverse_share_of_main": 0.8668
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 175,
      "a_to_b_moe_90": 213,
      "b_to_a": 1211,
      "b_to_a_moe_90": 972,
      "gross_exchange": 1386,
      "directional_balance": 1036,
      "dominant_direction": "New Jersey to Hawaii",
      "main_flow": 1211,
      "reverse_flow": 175,
      "reverse_share_of_main": 0.1445
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 977,
      "a_to_b_moe_90": 747,
      "b_to_a": 406,
      "b_to_a_moe_90": 379,
      "gross_exchange": 1383,
      "directional_balance": 571,
      "dominant_direction": "Tennessee to Wisconsin",
      "main_flow": 977,
      "reverse_flow": 406,
      "reverse_share_of_main": 0.4156
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 884,
      "a_to_b_moe_90": 633,
      "b_to_a": 495,
      "b_to_a_moe_90": 394,
      "gross_exchange": 1379,
      "directional_balance": 389,
      "dominant_direction": "Indiana to South Carolina",
      "main_flow": 884,
      "reverse_flow": 495,
      "reverse_share_of_main": 0.56
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 1378,
      "a_to_b_moe_90": 771,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1378,
      "directional_balance": 1378,
      "dominant_direction": "Kansas to North Dakota",
      "main_flow": 1378,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 968,
      "a_to_b_moe_90": 979,
      "b_to_a": 395,
      "b_to_a_moe_90": 436,
      "gross_exchange": 1363,
      "directional_balance": 573,
      "dominant_direction": "Alabama to Nevada",
      "main_flow": 968,
      "reverse_flow": 395,
      "reverse_share_of_main": 0.4081
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 418,
      "a_to_b_moe_90": 426,
      "b_to_a": 945,
      "b_to_a_moe_90": 584,
      "gross_exchange": 1363,
      "directional_balance": 527,
      "dominant_direction": "Pennsylvania to New Mexico",
      "main_flow": 945,
      "reverse_flow": 418,
      "reverse_share_of_main": 0.4423
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 182,
      "a_to_b_moe_90": 216,
      "b_to_a": 1178,
      "b_to_a_moe_90": 828,
      "gross_exchange": 1360,
      "directional_balance": 996,
      "dominant_direction": "Utah to Louisiana",
      "main_flow": 1178,
      "reverse_flow": 182,
      "reverse_share_of_main": 0.1545
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 739,
      "a_to_b_moe_90": 783,
      "b_to_a": 621,
      "b_to_a_moe_90": 443,
      "gross_exchange": 1360,
      "directional_balance": 118,
      "dominant_direction": "District of Columbia to Washington",
      "main_flow": 739,
      "reverse_flow": 621,
      "reverse_share_of_main": 0.8403
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 733,
      "a_to_b_moe_90": 583,
      "b_to_a": 621,
      "b_to_a_moe_90": 706,
      "gross_exchange": 1354,
      "directional_balance": 112,
      "dominant_direction": "Delaware to District of Columbia",
      "main_flow": 733,
      "reverse_flow": 621,
      "reverse_share_of_main": 0.8472
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 425,
      "a_to_b_moe_90": 468,
      "b_to_a": 919,
      "b_to_a_moe_90": 1262,
      "gross_exchange": 1344,
      "directional_balance": 494,
      "dominant_direction": "Missouri to Connecticut",
      "main_flow": 919,
      "reverse_flow": 425,
      "reverse_share_of_main": 0.4625
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 835,
      "a_to_b_moe_90": 846,
      "b_to_a": 509,
      "b_to_a_moe_90": 451,
      "gross_exchange": 1344,
      "directional_balance": 326,
      "dominant_direction": "Alabama to Wisconsin",
      "main_flow": 835,
      "reverse_flow": 509,
      "reverse_share_of_main": 0.6096
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 609,
      "a_to_b_moe_90": 703,
      "b_to_a": 732,
      "b_to_a_moe_90": 903,
      "gross_exchange": 1341,
      "directional_balance": 123,
      "dominant_direction": "Kentucky to Arizona",
      "main_flow": 732,
      "reverse_flow": 609,
      "reverse_share_of_main": 0.832
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 314,
      "a_to_b_moe_90": 255,
      "b_to_a": 1026,
      "b_to_a_moe_90": 730,
      "gross_exchange": 1340,
      "directional_balance": 712,
      "dominant_direction": "Oregon to Georgia",
      "main_flow": 1026,
      "reverse_flow": 314,
      "reverse_share_of_main": 0.306
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "Delaware",
      "state_b_fips": "10",
      "a_to_b": 1145,
      "a_to_b_moe_90": 746,
      "b_to_a": 194,
      "b_to_a_moe_90": 193,
      "gross_exchange": 1339,
      "directional_balance": 951,
      "dominant_direction": "California to Delaware",
      "main_flow": 1145,
      "reverse_flow": 194,
      "reverse_share_of_main": 0.1694
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 515,
      "a_to_b_moe_90": 585,
      "b_to_a": 824,
      "b_to_a_moe_90": 769,
      "gross_exchange": 1339,
      "directional_balance": 309,
      "dominant_direction": "New Mexico to Idaho",
      "main_flow": 824,
      "reverse_flow": 515,
      "reverse_share_of_main": 0.625
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 848,
      "a_to_b_moe_90": 1230,
      "b_to_a": 490,
      "b_to_a_moe_90": 440,
      "gross_exchange": 1338,
      "directional_balance": 358,
      "dominant_direction": "South Carolina to Wisconsin",
      "main_flow": 848,
      "reverse_flow": 490,
      "reverse_share_of_main": 0.5778
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Connecticut",
      "state_b_fips": "09",
      "a_to_b": 317,
      "a_to_b_moe_90": 496,
      "b_to_a": 1013,
      "b_to_a_moe_90": 990,
      "gross_exchange": 1330,
      "directional_balance": 696,
      "dominant_direction": "Connecticut to Arizona",
      "main_flow": 1013,
      "reverse_flow": 317,
      "reverse_share_of_main": 0.3129
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 864,
      "a_to_b_moe_90": 724,
      "b_to_a": 466,
      "b_to_a_moe_90": 376,
      "gross_exchange": 1330,
      "directional_balance": 398,
      "dominant_direction": "Mississippi to Missouri",
      "main_flow": 864,
      "reverse_flow": 466,
      "reverse_share_of_main": 0.5394
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 926,
      "a_to_b_moe_90": 804,
      "b_to_a": 399,
      "b_to_a_moe_90": 510,
      "gross_exchange": 1325,
      "directional_balance": 527,
      "dominant_direction": "Michigan to Nebraska",
      "main_flow": 926,
      "reverse_flow": 399,
      "reverse_share_of_main": 0.4309
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 432,
      "a_to_b_moe_90": 431,
      "b_to_a": 887,
      "b_to_a_moe_90": 820,
      "gross_exchange": 1319,
      "directional_balance": 455,
      "dominant_direction": "Tennessee to Iowa",
      "main_flow": 887,
      "reverse_flow": 432,
      "reverse_share_of_main": 0.487
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 224,
      "a_to_b_moe_90": 340,
      "b_to_a": 1085,
      "b_to_a_moe_90": 1328,
      "gross_exchange": 1309,
      "directional_balance": 861,
      "dominant_direction": "South Carolina to Alaska",
      "main_flow": 1085,
      "reverse_flow": 224,
      "reverse_share_of_main": 0.2065
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 739,
      "a_to_b_moe_90": 908,
      "b_to_a": 567,
      "b_to_a_moe_90": 504,
      "gross_exchange": 1306,
      "directional_balance": 172,
      "dominant_direction": "Arkansas to Nevada",
      "main_flow": 739,
      "reverse_flow": 567,
      "reverse_share_of_main": 0.7673
    },
    {
      "state_a": "Vermont",
      "state_a_fips": "50",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 118,
      "a_to_b_moe_90": 138,
      "b_to_a": 1183,
      "b_to_a_moe_90": 1460,
      "gross_exchange": 1301,
      "directional_balance": 1065,
      "dominant_direction": "Washington to Vermont",
      "main_flow": 1183,
      "reverse_flow": 118,
      "reverse_share_of_main": 0.0997
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 1122,
      "a_to_b_moe_90": 861,
      "b_to_a": 179,
      "b_to_a_moe_90": 196,
      "gross_exchange": 1301,
      "directional_balance": 943,
      "dominant_direction": "Minnesota to Nevada",
      "main_flow": 1122,
      "reverse_flow": 179,
      "reverse_share_of_main": 0.1595
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 57,
      "a_to_b_moe_90": 106,
      "b_to_a": 1242,
      "b_to_a_moe_90": 1162,
      "gross_exchange": 1299,
      "directional_balance": 1185,
      "dominant_direction": "North Dakota to Nebraska",
      "main_flow": 1242,
      "reverse_flow": 57,
      "reverse_share_of_main": 0.0459
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 583,
      "a_to_b_moe_90": 558,
      "b_to_a": 714,
      "b_to_a_moe_90": 773,
      "gross_exchange": 1297,
      "directional_balance": 131,
      "dominant_direction": "Michigan to Alaska",
      "main_flow": 714,
      "reverse_flow": 583,
      "reverse_share_of_main": 0.8165
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 701,
      "a_to_b_moe_90": 569,
      "b_to_a": 596,
      "b_to_a_moe_90": 692,
      "gross_exchange": 1297,
      "directional_balance": 105,
      "dominant_direction": "Massachusetts to Nevada",
      "main_flow": 701,
      "reverse_flow": 596,
      "reverse_share_of_main": 0.8502
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 741,
      "a_to_b_moe_90": 880,
      "b_to_a": 552,
      "b_to_a_moe_90": 561,
      "gross_exchange": 1293,
      "directional_balance": 189,
      "dominant_direction": "Iowa to Kentucky",
      "main_flow": 741,
      "reverse_flow": 552,
      "reverse_share_of_main": 0.7449
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 455,
      "a_to_b_moe_90": 515,
      "b_to_a": 835,
      "b_to_a_moe_90": 641,
      "gross_exchange": 1290,
      "directional_balance": 380,
      "dominant_direction": "New Mexico to Louisiana",
      "main_flow": 835,
      "reverse_flow": 455,
      "reverse_share_of_main": 0.5449
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 100,
      "a_to_b_moe_90": 142,
      "b_to_a": 1184,
      "b_to_a_moe_90": 1052,
      "gross_exchange": 1284,
      "directional_balance": 1084,
      "dominant_direction": "Wisconsin to Massachusetts",
      "main_flow": 1184,
      "reverse_flow": 100,
      "reverse_share_of_main": 0.0845
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 271,
      "a_to_b_moe_90": 406,
      "b_to_a": 1000,
      "b_to_a_moe_90": 878,
      "gross_exchange": 1271,
      "directional_balance": 729,
      "dominant_direction": "Utah to Indiana",
      "main_flow": 1000,
      "reverse_flow": 271,
      "reverse_share_of_main": 0.271
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 815,
      "a_to_b_moe_90": 818,
      "b_to_a": 453,
      "b_to_a_moe_90": 708,
      "gross_exchange": 1268,
      "directional_balance": 362,
      "dominant_direction": "Hawaii to Kansas",
      "main_flow": 815,
      "reverse_flow": 453,
      "reverse_share_of_main": 0.5558
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 707,
      "a_to_b_moe_90": 715,
      "b_to_a": 556,
      "b_to_a_moe_90": 456,
      "gross_exchange": 1263,
      "directional_balance": 151,
      "dominant_direction": "District of Columbia to Michigan",
      "main_flow": 707,
      "reverse_flow": 556,
      "reverse_share_of_main": 0.7864
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 1262,
      "b_to_a_moe_90": 959,
      "gross_exchange": 1262,
      "directional_balance": 1262,
      "dominant_direction": "Hawaii to Arkansas",
      "main_flow": 1262,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 996,
      "a_to_b_moe_90": 1140,
      "b_to_a": 261,
      "b_to_a_moe_90": 434,
      "gross_exchange": 1257,
      "directional_balance": 735,
      "dominant_direction": "Maryland to Mississippi",
      "main_flow": 996,
      "reverse_flow": 261,
      "reverse_share_of_main": 0.262
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 805,
      "a_to_b_moe_90": 800,
      "b_to_a": 443,
      "b_to_a_moe_90": 489,
      "gross_exchange": 1248,
      "directional_balance": 362,
      "dominant_direction": "Arizona to New Hampshire",
      "main_flow": 805,
      "reverse_flow": 443,
      "reverse_share_of_main": 0.5503
    },
    {
      "state_a": "Florida",
      "state_a_fips": "12",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 272,
      "a_to_b_moe_90": 278,
      "b_to_a": 964,
      "b_to_a_moe_90": 530,
      "gross_exchange": 1236,
      "directional_balance": 692,
      "dominant_direction": "Vermont to Florida",
      "main_flow": 964,
      "reverse_flow": 272,
      "reverse_share_of_main": 0.2822
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 645,
      "a_to_b_moe_90": 482,
      "b_to_a": 588,
      "b_to_a_moe_90": 644,
      "gross_exchange": 1233,
      "directional_balance": 57,
      "dominant_direction": "New Hampshire to North Carolina",
      "main_flow": 645,
      "reverse_flow": 588,
      "reverse_share_of_main": 0.9116
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 979,
      "a_to_b_moe_90": 916,
      "b_to_a": 249,
      "b_to_a_moe_90": 270,
      "gross_exchange": 1228,
      "directional_balance": 730,
      "dominant_direction": "Illinois to North Dakota",
      "main_flow": 979,
      "reverse_flow": 249,
      "reverse_share_of_main": 0.2543
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 1034,
      "a_to_b_moe_90": 780,
      "b_to_a": 191,
      "b_to_a_moe_90": 321,
      "gross_exchange": 1225,
      "directional_balance": 843,
      "dominant_direction": "Kansas to Louisiana",
      "main_flow": 1034,
      "reverse_flow": 191,
      "reverse_share_of_main": 0.1847
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 530,
      "a_to_b_moe_90": 441,
      "b_to_a": 683,
      "b_to_a_moe_90": 477,
      "gross_exchange": 1213,
      "directional_balance": 153,
      "dominant_direction": "Missouri to Massachusetts",
      "main_flow": 683,
      "reverse_flow": 530,
      "reverse_share_of_main": 0.776
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 173,
      "a_to_b_moe_90": 272,
      "b_to_a": 1036,
      "b_to_a_moe_90": 728,
      "gross_exchange": 1209,
      "directional_balance": 863,
      "dominant_direction": "New Mexico to Maryland",
      "main_flow": 1036,
      "reverse_flow": 173,
      "reverse_share_of_main": 0.167
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 363,
      "a_to_b_moe_90": 386,
      "b_to_a": 846,
      "b_to_a_moe_90": 649,
      "gross_exchange": 1209,
      "directional_balance": 483,
      "dominant_direction": "Ohio to Nevada",
      "main_flow": 846,
      "reverse_flow": 363,
      "reverse_share_of_main": 0.4291
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 12,
      "a_to_b_moe_90": 6,
      "b_to_a": 1194,
      "b_to_a_moe_90": 1110,
      "gross_exchange": 1206,
      "directional_balance": 1182,
      "dominant_direction": "Idaho to Alabama",
      "main_flow": 1194,
      "reverse_flow": 12,
      "reverse_share_of_main": 0.0101
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 130,
      "a_to_b_moe_90": 112,
      "b_to_a": 1074,
      "b_to_a_moe_90": 501,
      "gross_exchange": 1204,
      "directional_balance": 944,
      "dominant_direction": "Oregon to Connecticut",
      "main_flow": 1074,
      "reverse_flow": 130,
      "reverse_share_of_main": 0.121
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 1202,
      "b_to_a_moe_90": 739,
      "gross_exchange": 1202,
      "directional_balance": 1202,
      "dominant_direction": "Wisconsin to Connecticut",
      "main_flow": 1202,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 418,
      "a_to_b_moe_90": 371,
      "b_to_a": 784,
      "b_to_a_moe_90": 790,
      "gross_exchange": 1202,
      "directional_balance": 366,
      "dominant_direction": "Tennessee to District of Columbia",
      "main_flow": 784,
      "reverse_flow": 418,
      "reverse_share_of_main": 0.5332
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 650,
      "a_to_b_moe_90": 596,
      "b_to_a": 549,
      "b_to_a_moe_90": 514,
      "gross_exchange": 1199,
      "directional_balance": 101,
      "dominant_direction": "Nevada to Oklahoma",
      "main_flow": 650,
      "reverse_flow": 549,
      "reverse_share_of_main": 0.8446
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 1171,
      "a_to_b_moe_90": 747,
      "b_to_a": 26,
      "b_to_a_moe_90": 48,
      "gross_exchange": 1197,
      "directional_balance": 1145,
      "dominant_direction": "Minnesota to South Carolina",
      "main_flow": 1171,
      "reverse_flow": 26,
      "reverse_share_of_main": 0.0222
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 156,
      "a_to_b_moe_90": 140,
      "b_to_a": 1035,
      "b_to_a_moe_90": 916,
      "gross_exchange": 1191,
      "directional_balance": 879,
      "dominant_direction": "South Dakota to Montana",
      "main_flow": 1035,
      "reverse_flow": 156,
      "reverse_share_of_main": 0.1507
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 975,
      "a_to_b_moe_90": 720,
      "b_to_a": 210,
      "b_to_a_moe_90": 243,
      "gross_exchange": 1185,
      "directional_balance": 765,
      "dominant_direction": "Alaska to Idaho",
      "main_flow": 975,
      "reverse_flow": 210,
      "reverse_share_of_main": 0.2154
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 234,
      "a_to_b_moe_90": 371,
      "b_to_a": 947,
      "b_to_a_moe_90": 779,
      "gross_exchange": 1181,
      "directional_balance": 713,
      "dominant_direction": "North Dakota to Nevada",
      "main_flow": 947,
      "reverse_flow": 234,
      "reverse_share_of_main": 0.2471
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 813,
      "a_to_b_moe_90": 715,
      "b_to_a": 365,
      "b_to_a_moe_90": 429,
      "gross_exchange": 1178,
      "directional_balance": 448,
      "dominant_direction": "Arkansas to Ohio",
      "main_flow": 813,
      "reverse_flow": 365,
      "reverse_share_of_main": 0.449
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 583,
      "a_to_b_moe_90": 873,
      "b_to_a": 591,
      "b_to_a_moe_90": 714,
      "gross_exchange": 1174,
      "directional_balance": 8,
      "dominant_direction": "Wisconsin to Idaho",
      "main_flow": 591,
      "reverse_flow": 583,
      "reverse_share_of_main": 0.9865
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 519,
      "a_to_b_moe_90": 723,
      "b_to_a": 646,
      "b_to_a_moe_90": 562,
      "gross_exchange": 1165,
      "directional_balance": 127,
      "dominant_direction": "Wyoming to Idaho",
      "main_flow": 646,
      "reverse_flow": 519,
      "reverse_share_of_main": 0.8034
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 268,
      "a_to_b_moe_90": 437,
      "b_to_a": 885,
      "b_to_a_moe_90": 1425,
      "gross_exchange": 1153,
      "directional_balance": 617,
      "dominant_direction": "Missouri to Maine",
      "main_flow": 885,
      "reverse_flow": 268,
      "reverse_share_of_main": 0.3028
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 1150,
      "a_to_b_moe_90": 1150,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1150,
      "directional_balance": 1150,
      "dominant_direction": "Connecticut to Utah",
      "main_flow": 1150,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 911,
      "a_to_b_moe_90": 606,
      "b_to_a": 239,
      "b_to_a_moe_90": 393,
      "gross_exchange": 1150,
      "directional_balance": 672,
      "dominant_direction": "Colorado to Maine",
      "main_flow": 911,
      "reverse_flow": 239,
      "reverse_share_of_main": 0.2623
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 838,
      "a_to_b_moe_90": 1350,
      "b_to_a": 306,
      "b_to_a_moe_90": 360,
      "gross_exchange": 1144,
      "directional_balance": 532,
      "dominant_direction": "Hawaii to Maryland",
      "main_flow": 838,
      "reverse_flow": 306,
      "reverse_share_of_main": 0.3652
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 451,
      "a_to_b_moe_90": 647,
      "b_to_a": 692,
      "b_to_a_moe_90": 1115,
      "gross_exchange": 1143,
      "directional_balance": 241,
      "dominant_direction": "Montana to Kansas",
      "main_flow": 692,
      "reverse_flow": 451,
      "reverse_share_of_main": 0.6517
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 1127,
      "a_to_b_moe_90": 1197,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1127,
      "directional_balance": 1127,
      "dominant_direction": "Indiana to North Dakota",
      "main_flow": 1127,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 772,
      "a_to_b_moe_90": 906,
      "b_to_a": 353,
      "b_to_a_moe_90": 306,
      "gross_exchange": 1125,
      "directional_balance": 419,
      "dominant_direction": "Idaho to Virginia",
      "main_flow": 772,
      "reverse_flow": 353,
      "reverse_share_of_main": 0.4573
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Delaware",
      "state_b_fips": "10",
      "a_to_b": 1071,
      "a_to_b_moe_90": 1350,
      "b_to_a": 48,
      "b_to_a_moe_90": 102,
      "gross_exchange": 1119,
      "directional_balance": 1023,
      "dominant_direction": "Arkansas to Delaware",
      "main_flow": 1071,
      "reverse_flow": 48,
      "reverse_share_of_main": 0.0448
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 622,
      "a_to_b_moe_90": 497,
      "b_to_a": 491,
      "b_to_a_moe_90": 440,
      "gross_exchange": 1113,
      "directional_balance": 131,
      "dominant_direction": "Kansas to Oregon",
      "main_flow": 622,
      "reverse_flow": 491,
      "reverse_share_of_main": 0.7894
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 226,
      "a_to_b_moe_90": 270,
      "b_to_a": 879,
      "b_to_a_moe_90": 763,
      "gross_exchange": 1105,
      "directional_balance": 653,
      "dominant_direction": "Washington to Mississippi",
      "main_flow": 879,
      "reverse_flow": 226,
      "reverse_share_of_main": 0.2571
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 1101,
      "a_to_b_moe_90": 1302,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1101,
      "directional_balance": 1101,
      "dominant_direction": "Kansas to Rhode Island",
      "main_flow": 1101,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 568,
      "a_to_b_moe_90": 624,
      "b_to_a": 519,
      "b_to_a_moe_90": 494,
      "gross_exchange": 1087,
      "directional_balance": 49,
      "dominant_direction": "Maine to Utah",
      "main_flow": 568,
      "reverse_flow": 519,
      "reverse_share_of_main": 0.9137
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 910,
      "a_to_b_moe_90": 1366,
      "b_to_a": 176,
      "b_to_a_moe_90": 316,
      "gross_exchange": 1086,
      "directional_balance": 734,
      "dominant_direction": "Delaware to Illinois",
      "main_flow": 910,
      "reverse_flow": 176,
      "reverse_share_of_main": 0.1934
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 834,
      "a_to_b_moe_90": 967,
      "b_to_a": 249,
      "b_to_a_moe_90": 329,
      "gross_exchange": 1083,
      "directional_balance": 585,
      "dominant_direction": "Missouri to Montana",
      "main_flow": 834,
      "reverse_flow": 249,
      "reverse_share_of_main": 0.2986
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 238,
      "a_to_b_moe_90": 284,
      "b_to_a": 843,
      "b_to_a_moe_90": 685,
      "gross_exchange": 1081,
      "directional_balance": 605,
      "dominant_direction": "New Mexico to Missouri",
      "main_flow": 843,
      "reverse_flow": 238,
      "reverse_share_of_main": 0.2823
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 230,
      "a_to_b_moe_90": 236,
      "b_to_a": 850,
      "b_to_a_moe_90": 1134,
      "gross_exchange": 1080,
      "directional_balance": 620,
      "dominant_direction": "Nevada to Alaska",
      "main_flow": 850,
      "reverse_flow": 230,
      "reverse_share_of_main": 0.2706
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 578,
      "a_to_b_moe_90": 685,
      "b_to_a": 495,
      "b_to_a_moe_90": 575,
      "gross_exchange": 1073,
      "directional_balance": 83,
      "dominant_direction": "Delaware to North Carolina",
      "main_flow": 578,
      "reverse_flow": 495,
      "reverse_share_of_main": 0.8564
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 404,
      "a_to_b_moe_90": 429,
      "b_to_a": 667,
      "b_to_a_moe_90": 949,
      "gross_exchange": 1071,
      "directional_balance": 263,
      "dominant_direction": "Oklahoma to Alaska",
      "main_flow": 667,
      "reverse_flow": 404,
      "reverse_share_of_main": 0.6057
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 897,
      "a_to_b_moe_90": 616,
      "b_to_a": 173,
      "b_to_a_moe_90": 140,
      "gross_exchange": 1070,
      "directional_balance": 724,
      "dominant_direction": "New Mexico to Utah",
      "main_flow": 897,
      "reverse_flow": 173,
      "reverse_share_of_main": 0.1929
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 334,
      "a_to_b_moe_90": 257,
      "b_to_a": 736,
      "b_to_a_moe_90": 915,
      "gross_exchange": 1070,
      "directional_balance": 402,
      "dominant_direction": "New Mexico to Nebraska",
      "main_flow": 736,
      "reverse_flow": 334,
      "reverse_share_of_main": 0.4538
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 614,
      "a_to_b_moe_90": 510,
      "b_to_a": 453,
      "b_to_a_moe_90": 513,
      "gross_exchange": 1067,
      "directional_balance": 161,
      "dominant_direction": "Georgia to New Hampshire",
      "main_flow": 614,
      "reverse_flow": 453,
      "reverse_share_of_main": 0.7378
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Connecticut",
      "state_b_fips": "09",
      "a_to_b": 961,
      "a_to_b_moe_90": 1105,
      "b_to_a": 105,
      "b_to_a_moe_90": 190,
      "gross_exchange": 1066,
      "directional_balance": 856,
      "dominant_direction": "Alabama to Connecticut",
      "main_flow": 961,
      "reverse_flow": 105,
      "reverse_share_of_main": 0.1093
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 414,
      "a_to_b_moe_90": 396,
      "b_to_a": 648,
      "b_to_a_moe_90": 586,
      "gross_exchange": 1062,
      "directional_balance": 234,
      "dominant_direction": "Nebraska to Georgia",
      "main_flow": 648,
      "reverse_flow": 414,
      "reverse_share_of_main": 0.6389
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 930,
      "a_to_b_moe_90": 483,
      "b_to_a": 130,
      "b_to_a_moe_90": 218,
      "gross_exchange": 1060,
      "directional_balance": 800,
      "dominant_direction": "Delaware to Ohio",
      "main_flow": 930,
      "reverse_flow": 130,
      "reverse_share_of_main": 0.1398
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 530,
      "a_to_b_moe_90": 449,
      "b_to_a": 523,
      "b_to_a_moe_90": 499,
      "gross_exchange": 1053,
      "directional_balance": 7,
      "dominant_direction": "Iowa to Virginia",
      "main_flow": 530,
      "reverse_flow": 523,
      "reverse_share_of_main": 0.9868
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 1052,
      "b_to_a_moe_90": 998,
      "gross_exchange": 1052,
      "directional_balance": 1052,
      "dominant_direction": "Vermont to Illinois",
      "main_flow": 1052,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 862,
      "a_to_b_moe_90": 1387,
      "b_to_a": 186,
      "b_to_a_moe_90": 330,
      "gross_exchange": 1048,
      "directional_balance": 676,
      "dominant_direction": "Maine to Minnesota",
      "main_flow": 862,
      "reverse_flow": 186,
      "reverse_share_of_main": 0.2158
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 220,
      "a_to_b_moe_90": 264,
      "b_to_a": 825,
      "b_to_a_moe_90": 959,
      "gross_exchange": 1045,
      "directional_balance": 605,
      "dominant_direction": "Montana to Michigan",
      "main_flow": 825,
      "reverse_flow": 220,
      "reverse_share_of_main": 0.2667
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 979,
      "a_to_b_moe_90": 622,
      "b_to_a": 65,
      "b_to_a_moe_90": 106,
      "gross_exchange": 1044,
      "directional_balance": 914,
      "dominant_direction": "Montana to North Carolina",
      "main_flow": 979,
      "reverse_flow": 65,
      "reverse_share_of_main": 0.0664
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 262,
      "a_to_b_moe_90": 263,
      "b_to_a": 780,
      "b_to_a_moe_90": 673,
      "gross_exchange": 1042,
      "directional_balance": 518,
      "dominant_direction": "Wisconsin to Arkansas",
      "main_flow": 780,
      "reverse_flow": 262,
      "reverse_share_of_main": 0.3359
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 469,
      "a_to_b_moe_90": 416,
      "b_to_a": 572,
      "b_to_a_moe_90": 678,
      "gross_exchange": 1041,
      "directional_balance": 103,
      "dominant_direction": "Tennessee to Hawaii",
      "main_flow": 572,
      "reverse_flow": 469,
      "reverse_share_of_main": 0.8199
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 515,
      "a_to_b_moe_90": 455,
      "b_to_a": 522,
      "b_to_a_moe_90": 376,
      "gross_exchange": 1037,
      "directional_balance": 7,
      "dominant_direction": "Ohio to New Mexico",
      "main_flow": 522,
      "reverse_flow": 515,
      "reverse_share_of_main": 0.9866
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 766,
      "a_to_b_moe_90": 721,
      "b_to_a": 260,
      "b_to_a_moe_90": 288,
      "gross_exchange": 1026,
      "directional_balance": 506,
      "dominant_direction": "Kansas to South Carolina",
      "main_flow": 766,
      "reverse_flow": 260,
      "reverse_share_of_main": 0.3394
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 1022,
      "a_to_b_moe_90": 1183,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1022,
      "directional_balance": 1022,
      "dominant_direction": "Georgia to North Dakota",
      "main_flow": 1022,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Arkansas",
      "state_b_fips": "05",
      "a_to_b": 1021,
      "a_to_b_moe_90": 1165,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 1021,
      "directional_balance": 1021,
      "dominant_direction": "Alaska to Arkansas",
      "main_flow": 1021,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 551,
      "a_to_b_moe_90": 344,
      "b_to_a": 469,
      "b_to_a_moe_90": 450,
      "gross_exchange": 1020,
      "directional_balance": 82,
      "dominant_direction": "Hawaii to Idaho",
      "main_flow": 551,
      "reverse_flow": 469,
      "reverse_share_of_main": 0.8512
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 559,
      "a_to_b_moe_90": 524,
      "b_to_a": 455,
      "b_to_a_moe_90": 451,
      "gross_exchange": 1014,
      "directional_balance": 104,
      "dominant_direction": "Illinois to South Dakota",
      "main_flow": 559,
      "reverse_flow": 455,
      "reverse_share_of_main": 0.814
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 216,
      "a_to_b_moe_90": 297,
      "b_to_a": 797,
      "b_to_a_moe_90": 662,
      "gross_exchange": 1013,
      "directional_balance": 581,
      "dominant_direction": "Montana to Georgia",
      "main_flow": 797,
      "reverse_flow": 216,
      "reverse_share_of_main": 0.271
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 524,
      "a_to_b_moe_90": 299,
      "b_to_a": 488,
      "b_to_a_moe_90": 584,
      "gross_exchange": 1012,
      "directional_balance": 36,
      "dominant_direction": "Iowa to Utah",
      "main_flow": 524,
      "reverse_flow": 488,
      "reverse_share_of_main": 0.9313
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 533,
      "a_to_b_moe_90": 419,
      "b_to_a": 474,
      "b_to_a_moe_90": 419,
      "gross_exchange": 1007,
      "directional_balance": 59,
      "dominant_direction": "Oregon to South Carolina",
      "main_flow": 533,
      "reverse_flow": 474,
      "reverse_share_of_main": 0.8893
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 707,
      "a_to_b_moe_90": 679,
      "b_to_a": 296,
      "b_to_a_moe_90": 402,
      "gross_exchange": 1003,
      "directional_balance": 411,
      "dominant_direction": "Illinois to New Mexico",
      "main_flow": 707,
      "reverse_flow": 296,
      "reverse_share_of_main": 0.4187
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 208,
      "a_to_b_moe_90": 244,
      "b_to_a": 792,
      "b_to_a_moe_90": 824,
      "gross_exchange": 1000,
      "directional_balance": 584,
      "dominant_direction": "Maine to Hawaii",
      "main_flow": 792,
      "reverse_flow": 208,
      "reverse_share_of_main": 0.2626
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 558,
      "a_to_b_moe_90": 552,
      "b_to_a": 441,
      "b_to_a_moe_90": 528,
      "gross_exchange": 999,
      "directional_balance": 117,
      "dominant_direction": "Maryland to Rhode Island",
      "main_flow": 558,
      "reverse_flow": 441,
      "reverse_share_of_main": 0.7903
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Texas",
      "state_b_fips": "48",
      "a_to_b": 657,
      "a_to_b_moe_90": 700,
      "b_to_a": 339,
      "b_to_a_moe_90": 295,
      "gross_exchange": 996,
      "directional_balance": 318,
      "dominant_direction": "Maine to Texas",
      "main_flow": 657,
      "reverse_flow": 339,
      "reverse_share_of_main": 0.516
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 565,
      "a_to_b_moe_90": 455,
      "b_to_a": 425,
      "b_to_a_moe_90": 386,
      "gross_exchange": 990,
      "directional_balance": 140,
      "dominant_direction": "Pennsylvania to Rhode Island",
      "main_flow": 565,
      "reverse_flow": 425,
      "reverse_share_of_main": 0.7522
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 577,
      "a_to_b_moe_90": 565,
      "b_to_a": 412,
      "b_to_a_moe_90": 337,
      "gross_exchange": 989,
      "directional_balance": 165,
      "dominant_direction": "Kentucky to New Jersey",
      "main_flow": 577,
      "reverse_flow": 412,
      "reverse_share_of_main": 0.714
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 267,
      "a_to_b_moe_90": 195,
      "b_to_a": 718,
      "b_to_a_moe_90": 987,
      "gross_exchange": 985,
      "directional_balance": 451,
      "dominant_direction": "New York to Iowa",
      "main_flow": 718,
      "reverse_flow": 267,
      "reverse_share_of_main": 0.3719
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 323,
      "a_to_b_moe_90": 291,
      "b_to_a": 662,
      "b_to_a_moe_90": 634,
      "gross_exchange": 985,
      "directional_balance": 339,
      "dominant_direction": "West Virginia to Tennessee",
      "main_flow": 662,
      "reverse_flow": 323,
      "reverse_share_of_main": 0.4879
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 838,
      "a_to_b_moe_90": 837,
      "b_to_a": 143,
      "b_to_a_moe_90": 217,
      "gross_exchange": 981,
      "directional_balance": 695,
      "dominant_direction": "Minnesota to Oklahoma",
      "main_flow": 838,
      "reverse_flow": 143,
      "reverse_share_of_main": 0.1706
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 627,
      "a_to_b_moe_90": 617,
      "b_to_a": 354,
      "b_to_a_moe_90": 499,
      "gross_exchange": 981,
      "directional_balance": 273,
      "dominant_direction": "Kentucky to Minnesota",
      "main_flow": 627,
      "reverse_flow": 354,
      "reverse_share_of_main": 0.5646
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 387,
      "a_to_b_moe_90": 354,
      "b_to_a": 594,
      "b_to_a_moe_90": 481,
      "gross_exchange": 981,
      "directional_balance": 207,
      "dominant_direction": "Michigan to Idaho",
      "main_flow": 594,
      "reverse_flow": 387,
      "reverse_share_of_main": 0.6515
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 561,
      "a_to_b_moe_90": 945,
      "b_to_a": 418,
      "b_to_a_moe_90": 623,
      "gross_exchange": 979,
      "directional_balance": 143,
      "dominant_direction": "Alaska to Louisiana",
      "main_flow": 561,
      "reverse_flow": 418,
      "reverse_share_of_main": 0.7451
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 492,
      "a_to_b_moe_90": 464,
      "b_to_a": 470,
      "b_to_a_moe_90": 556,
      "gross_exchange": 962,
      "directional_balance": 22,
      "dominant_direction": "Mississippi to South Carolina",
      "main_flow": 492,
      "reverse_flow": 470,
      "reverse_share_of_main": 0.9553
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 729,
      "a_to_b_moe_90": 637,
      "b_to_a": 228,
      "b_to_a_moe_90": 272,
      "gross_exchange": 957,
      "directional_balance": 501,
      "dominant_direction": "Iowa to South Carolina",
      "main_flow": 729,
      "reverse_flow": 228,
      "reverse_share_of_main": 0.3128
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 85,
      "a_to_b_moe_90": 149,
      "b_to_a": 866,
      "b_to_a_moe_90": 633,
      "gross_exchange": 951,
      "directional_balance": 781,
      "dominant_direction": "Wisconsin to Oklahoma",
      "main_flow": 866,
      "reverse_flow": 85,
      "reverse_share_of_main": 0.0982
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 566,
      "a_to_b_moe_90": 561,
      "b_to_a": 384,
      "b_to_a_moe_90": 554,
      "gross_exchange": 950,
      "directional_balance": 182,
      "dominant_direction": "Louisiana to Washington",
      "main_flow": 566,
      "reverse_flow": 384,
      "reverse_share_of_main": 0.6784
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 945,
      "b_to_a_moe_90": 599,
      "gross_exchange": 945,
      "directional_balance": 945,
      "dominant_direction": "Nevada to Maryland",
      "main_flow": 945,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 166,
      "a_to_b_moe_90": 283,
      "b_to_a": 779,
      "b_to_a_moe_90": 616,
      "gross_exchange": 945,
      "directional_balance": 613,
      "dominant_direction": "West Virginia to New York",
      "main_flow": 779,
      "reverse_flow": 166,
      "reverse_share_of_main": 0.2131
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 637,
      "a_to_b_moe_90": 1020,
      "b_to_a": 307,
      "b_to_a_moe_90": 380,
      "gross_exchange": 944,
      "directional_balance": 330,
      "dominant_direction": "Nevada to New Hampshire",
      "main_flow": 637,
      "reverse_flow": 307,
      "reverse_share_of_main": 0.4819
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 228,
      "a_to_b_moe_90": 454,
      "b_to_a": 714,
      "b_to_a_moe_90": 565,
      "gross_exchange": 942,
      "directional_balance": 486,
      "dominant_direction": "South Dakota to Alabama",
      "main_flow": 714,
      "reverse_flow": 228,
      "reverse_share_of_main": 0.3193
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 538,
      "a_to_b_moe_90": 509,
      "b_to_a": 403,
      "b_to_a_moe_90": 444,
      "gross_exchange": 941,
      "directional_balance": 135,
      "dominant_direction": "Arkansas to New York",
      "main_flow": 538,
      "reverse_flow": 403,
      "reverse_share_of_main": 0.7491
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 935,
      "b_to_a_moe_90": 760,
      "gross_exchange": 935,
      "directional_balance": 935,
      "dominant_direction": "Washington to Rhode Island",
      "main_flow": 935,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 201,
      "a_to_b_moe_90": 274,
      "b_to_a": 720,
      "b_to_a_moe_90": 752,
      "gross_exchange": 921,
      "directional_balance": 519,
      "dominant_direction": "Idaho to Arkansas",
      "main_flow": 720,
      "reverse_flow": 201,
      "reverse_share_of_main": 0.2792
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 743,
      "a_to_b_moe_90": 495,
      "b_to_a": 176,
      "b_to_a_moe_90": 176,
      "gross_exchange": 919,
      "directional_balance": 567,
      "dominant_direction": "Connecticut to Michigan",
      "main_flow": 743,
      "reverse_flow": 176,
      "reverse_share_of_main": 0.2369
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 546,
      "a_to_b_moe_90": 476,
      "b_to_a": 370,
      "b_to_a_moe_90": 519,
      "gross_exchange": 916,
      "directional_balance": 176,
      "dominant_direction": "Montana to Virginia",
      "main_flow": 546,
      "reverse_flow": 370,
      "reverse_share_of_main": 0.6777
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 670,
      "a_to_b_moe_90": 462,
      "b_to_a": 243,
      "b_to_a_moe_90": 388,
      "gross_exchange": 913,
      "directional_balance": 427,
      "dominant_direction": "Iowa to Louisiana",
      "main_flow": 670,
      "reverse_flow": 243,
      "reverse_share_of_main": 0.3627
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 350,
      "a_to_b_moe_90": 393,
      "b_to_a": 559,
      "b_to_a_moe_90": 603,
      "gross_exchange": 909,
      "directional_balance": 209,
      "dominant_direction": "North Dakota to North Carolina",
      "main_flow": 559,
      "reverse_flow": 350,
      "reverse_share_of_main": 0.6261
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 180,
      "a_to_b_moe_90": 213,
      "b_to_a": 727,
      "b_to_a_moe_90": 510,
      "gross_exchange": 907,
      "directional_balance": 547,
      "dominant_direction": "Mississippi to Kentucky",
      "main_flow": 727,
      "reverse_flow": 180,
      "reverse_share_of_main": 0.2476
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 112,
      "a_to_b_moe_90": 177,
      "b_to_a": 793,
      "b_to_a_moe_90": 665,
      "gross_exchange": 905,
      "directional_balance": 681,
      "dominant_direction": "Utah to Alabama",
      "main_flow": 793,
      "reverse_flow": 112,
      "reverse_share_of_main": 0.1412
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 903,
      "b_to_a_moe_90": 1236,
      "gross_exchange": 903,
      "directional_balance": 903,
      "dominant_direction": "Nebraska to Montana",
      "main_flow": 903,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 625,
      "a_to_b_moe_90": 604,
      "b_to_a": 277,
      "b_to_a_moe_90": 219,
      "gross_exchange": 902,
      "directional_balance": 348,
      "dominant_direction": "Idaho to Iowa",
      "main_flow": 625,
      "reverse_flow": 277,
      "reverse_share_of_main": 0.4432
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Delaware",
      "state_b_fips": "10",
      "a_to_b": 448,
      "a_to_b_moe_90": 437,
      "b_to_a": 451,
      "b_to_a_moe_90": 710,
      "gross_exchange": 899,
      "directional_balance": 3,
      "dominant_direction": "Delaware to Colorado",
      "main_flow": 451,
      "reverse_flow": 448,
      "reverse_share_of_main": 0.9933
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 581,
      "a_to_b_moe_90": 555,
      "b_to_a": 315,
      "b_to_a_moe_90": 405,
      "gross_exchange": 896,
      "directional_balance": 266,
      "dominant_direction": "Idaho to North Dakota",
      "main_flow": 581,
      "reverse_flow": 315,
      "reverse_share_of_main": 0.5422
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 858,
      "a_to_b_moe_90": 593,
      "b_to_a": 37,
      "b_to_a_moe_90": 65,
      "gross_exchange": 895,
      "directional_balance": 821,
      "dominant_direction": "Iowa to Maryland",
      "main_flow": 858,
      "reverse_flow": 37,
      "reverse_share_of_main": 0.0431
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 788,
      "a_to_b_moe_90": 739,
      "b_to_a": 107,
      "b_to_a_moe_90": 153,
      "gross_exchange": 895,
      "directional_balance": 681,
      "dominant_direction": "Louisiana to Nevada",
      "main_flow": 788,
      "reverse_flow": 107,
      "reverse_share_of_main": 0.1358
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 228,
      "a_to_b_moe_90": 385,
      "b_to_a": 667,
      "b_to_a_moe_90": 818,
      "gross_exchange": 895,
      "directional_balance": 439,
      "dominant_direction": "New Hampshire to Hawaii",
      "main_flow": 667,
      "reverse_flow": 228,
      "reverse_share_of_main": 0.3418
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 474,
      "a_to_b_moe_90": 601,
      "b_to_a": 410,
      "b_to_a_moe_90": 349,
      "gross_exchange": 884,
      "directional_balance": 64,
      "dominant_direction": "New Mexico to North Carolina",
      "main_flow": 474,
      "reverse_flow": 410,
      "reverse_share_of_main": 0.865
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 683,
      "a_to_b_moe_90": 610,
      "b_to_a": 198,
      "b_to_a_moe_90": 334,
      "gross_exchange": 881,
      "directional_balance": 485,
      "dominant_direction": "Indiana to West Virginia",
      "main_flow": 683,
      "reverse_flow": 198,
      "reverse_share_of_main": 0.2899
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 165,
      "a_to_b_moe_90": 193,
      "b_to_a": 714,
      "b_to_a_moe_90": 564,
      "gross_exchange": 879,
      "directional_balance": 549,
      "dominant_direction": "Pennsylvania to Maine",
      "main_flow": 714,
      "reverse_flow": 165,
      "reverse_share_of_main": 0.2311
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 143,
      "a_to_b_moe_90": 232,
      "b_to_a": 733,
      "b_to_a_moe_90": 1120,
      "gross_exchange": 876,
      "directional_balance": 590,
      "dominant_direction": "New Mexico to Iowa",
      "main_flow": 733,
      "reverse_flow": 143,
      "reverse_share_of_main": 0.1951
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 57,
      "a_to_b_moe_90": 114,
      "b_to_a": 817,
      "b_to_a_moe_90": 855,
      "gross_exchange": 874,
      "directional_balance": 760,
      "dominant_direction": "Rhode Island to Maine",
      "main_flow": 817,
      "reverse_flow": 57,
      "reverse_share_of_main": 0.0698
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 548,
      "a_to_b_moe_90": 409,
      "b_to_a": 326,
      "b_to_a_moe_90": 343,
      "gross_exchange": 874,
      "directional_balance": 222,
      "dominant_direction": "New Hampshire to Utah",
      "main_flow": 548,
      "reverse_flow": 326,
      "reverse_share_of_main": 0.5949
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 483,
      "a_to_b_moe_90": 407,
      "b_to_a": 381,
      "b_to_a_moe_90": 359,
      "gross_exchange": 864,
      "directional_balance": 102,
      "dominant_direction": "Idaho to New York",
      "main_flow": 483,
      "reverse_flow": 381,
      "reverse_share_of_main": 0.7888
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 659,
      "a_to_b_moe_90": 645,
      "b_to_a": 201,
      "b_to_a_moe_90": 317,
      "gross_exchange": 860,
      "directional_balance": 458,
      "dominant_direction": "Michigan to Vermont",
      "main_flow": 659,
      "reverse_flow": 201,
      "reverse_share_of_main": 0.305
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 365,
      "a_to_b_moe_90": 279,
      "b_to_a": 494,
      "b_to_a_moe_90": 758,
      "gross_exchange": 859,
      "directional_balance": 129,
      "dominant_direction": "New York to New Mexico",
      "main_flow": 494,
      "reverse_flow": 365,
      "reverse_share_of_main": 0.7389
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 471,
      "a_to_b_moe_90": 370,
      "b_to_a": 385,
      "b_to_a_moe_90": 345,
      "gross_exchange": 856,
      "directional_balance": 86,
      "dominant_direction": "Kentucky to Louisiana",
      "main_flow": 471,
      "reverse_flow": 385,
      "reverse_share_of_main": 0.8174
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 376,
      "a_to_b_moe_90": 99,
      "b_to_a": 469,
      "b_to_a_moe_90": 637,
      "gross_exchange": 845,
      "directional_balance": 93,
      "dominant_direction": "South Dakota to Massachusetts",
      "main_flow": 469,
      "reverse_flow": 376,
      "reverse_share_of_main": 0.8017
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 424,
      "a_to_b_moe_90": 451,
      "b_to_a": 418,
      "b_to_a_moe_90": 487,
      "gross_exchange": 842,
      "directional_balance": 6,
      "dominant_direction": "Montana to Pennsylvania",
      "main_flow": 424,
      "reverse_flow": 418,
      "reverse_share_of_main": 0.9858
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 840,
      "b_to_a_moe_90": 724,
      "gross_exchange": 840,
      "directional_balance": 840,
      "dominant_direction": "Iowa to Georgia",
      "main_flow": 840,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 840,
      "b_to_a_moe_90": 1237,
      "gross_exchange": 840,
      "directional_balance": 840,
      "dominant_direction": "South Dakota to Ohio",
      "main_flow": 840,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 828,
      "a_to_b_moe_90": 549,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 828,
      "directional_balance": 828,
      "dominant_direction": "Georgia to Rhode Island",
      "main_flow": 828,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 382,
      "a_to_b_moe_90": 312,
      "b_to_a": 443,
      "b_to_a_moe_90": 351,
      "gross_exchange": 825,
      "directional_balance": 61,
      "dominant_direction": "North Carolina to Arkansas",
      "main_flow": 443,
      "reverse_flow": 382,
      "reverse_share_of_main": 0.8623
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 823,
      "b_to_a_moe_90": 751,
      "gross_exchange": 823,
      "directional_balance": 823,
      "dominant_direction": "Wyoming to South Carolina",
      "main_flow": 823,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 516,
      "a_to_b_moe_90": 560,
      "b_to_a": 307,
      "b_to_a_moe_90": 356,
      "gross_exchange": 823,
      "directional_balance": 209,
      "dominant_direction": "Iowa to Massachusetts",
      "main_flow": 516,
      "reverse_flow": 307,
      "reverse_share_of_main": 0.595
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 522,
      "a_to_b_moe_90": 693,
      "b_to_a": 300,
      "b_to_a_moe_90": 374,
      "gross_exchange": 822,
      "directional_balance": 222,
      "dominant_direction": "Massachusetts to Oklahoma",
      "main_flow": 522,
      "reverse_flow": 300,
      "reverse_share_of_main": 0.5747
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 502,
      "a_to_b_moe_90": 785,
      "b_to_a": 319,
      "b_to_a_moe_90": 373,
      "gross_exchange": 821,
      "directional_balance": 183,
      "dominant_direction": "District of Columbia to Nebraska",
      "main_flow": 502,
      "reverse_flow": 319,
      "reverse_share_of_main": 0.6355
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 114,
      "a_to_b_moe_90": 195,
      "b_to_a": 703,
      "b_to_a_moe_90": 495,
      "gross_exchange": 817,
      "directional_balance": 589,
      "dominant_direction": "New Hampshire to Maryland",
      "main_flow": 703,
      "reverse_flow": 114,
      "reverse_share_of_main": 0.1622
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 728,
      "a_to_b_moe_90": 620,
      "b_to_a": 87,
      "b_to_a_moe_90": 153,
      "gross_exchange": 815,
      "directional_balance": 641,
      "dominant_direction": "Kansas to New Mexico",
      "main_flow": 728,
      "reverse_flow": 87,
      "reverse_share_of_main": 0.1195
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 706,
      "a_to_b_moe_90": 562,
      "b_to_a": 109,
      "b_to_a_moe_90": 123,
      "gross_exchange": 815,
      "directional_balance": 597,
      "dominant_direction": "Arizona to District of Columbia",
      "main_flow": 706,
      "reverse_flow": 109,
      "reverse_share_of_main": 0.1544
    },
    {
      "state_a": "California",
      "state_a_fips": "06",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 285,
      "a_to_b_moe_90": 314,
      "b_to_a": 530,
      "b_to_a_moe_90": 487,
      "gross_exchange": 815,
      "directional_balance": 245,
      "dominant_direction": "North Dakota to California",
      "main_flow": 530,
      "reverse_flow": 285,
      "reverse_share_of_main": 0.5377
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 558,
      "a_to_b_moe_90": 523,
      "b_to_a": 247,
      "b_to_a_moe_90": 369,
      "gross_exchange": 805,
      "directional_balance": 311,
      "dominant_direction": "Hawaii to Massachusetts",
      "main_flow": 558,
      "reverse_flow": 247,
      "reverse_share_of_main": 0.4427
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 570,
      "a_to_b_moe_90": 498,
      "b_to_a": 233,
      "b_to_a_moe_90": 291,
      "gross_exchange": 803,
      "directional_balance": 337,
      "dominant_direction": "Maryland to Utah",
      "main_flow": 570,
      "reverse_flow": 233,
      "reverse_share_of_main": 0.4088
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "New York",
      "state_b_fips": "36",
      "a_to_b": 433,
      "a_to_b_moe_90": 721,
      "b_to_a": 368,
      "b_to_a_moe_90": 402,
      "gross_exchange": 801,
      "directional_balance": 65,
      "dominant_direction": "Montana to New York",
      "main_flow": 433,
      "reverse_flow": 368,
      "reverse_share_of_main": 0.8499
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 75,
      "a_to_b_moe_90": 96,
      "b_to_a": 719,
      "b_to_a_moe_90": 591,
      "gross_exchange": 794,
      "directional_balance": 644,
      "dominant_direction": "South Dakota to Idaho",
      "main_flow": 719,
      "reverse_flow": 75,
      "reverse_share_of_main": 0.1043
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 132,
      "a_to_b_moe_90": 171,
      "b_to_a": 662,
      "b_to_a_moe_90": 542,
      "gross_exchange": 794,
      "directional_balance": 530,
      "dominant_direction": "Louisiana to District of Columbia",
      "main_flow": 662,
      "reverse_flow": 132,
      "reverse_share_of_main": 0.1994
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 419,
      "a_to_b_moe_90": 697,
      "b_to_a": 370,
      "b_to_a_moe_90": 450,
      "gross_exchange": 789,
      "directional_balance": 49,
      "dominant_direction": "Connecticut to Iowa",
      "main_flow": 419,
      "reverse_flow": 370,
      "reverse_share_of_main": 0.8831
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 784,
      "a_to_b_moe_90": 1037,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 784,
      "directional_balance": 784,
      "dominant_direction": "North Dakota to South Carolina",
      "main_flow": 784,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 138,
      "a_to_b_moe_90": 235,
      "b_to_a": 641,
      "b_to_a_moe_90": 722,
      "gross_exchange": 779,
      "directional_balance": 503,
      "dominant_direction": "South Dakota to Missouri",
      "main_flow": 641,
      "reverse_flow": 138,
      "reverse_share_of_main": 0.2153
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 523,
      "a_to_b_moe_90": 518,
      "b_to_a": 256,
      "b_to_a_moe_90": 461,
      "gross_exchange": 779,
      "directional_balance": 267,
      "dominant_direction": "Alaska to Wisconsin",
      "main_flow": 523,
      "reverse_flow": 256,
      "reverse_share_of_main": 0.4895
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 725,
      "a_to_b_moe_90": 681,
      "b_to_a": 53,
      "b_to_a_moe_90": 90,
      "gross_exchange": 778,
      "directional_balance": 672,
      "dominant_direction": "Michigan to Mississippi",
      "main_flow": 725,
      "reverse_flow": 53,
      "reverse_share_of_main": 0.0731
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 777,
      "a_to_b_moe_90": 453,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 777,
      "directional_balance": 777,
      "dominant_direction": "New Jersey to West Virginia",
      "main_flow": 777,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 68,
      "a_to_b_moe_90": 119,
      "b_to_a": 702,
      "b_to_a_moe_90": 812,
      "gross_exchange": 770,
      "directional_balance": 634,
      "dominant_direction": "Wyoming to Alabama",
      "main_flow": 702,
      "reverse_flow": 68,
      "reverse_share_of_main": 0.0969
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 767,
      "b_to_a_moe_90": 798,
      "gross_exchange": 767,
      "directional_balance": 767,
      "dominant_direction": "New Mexico to Massachusetts",
      "main_flow": 767,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 483,
      "a_to_b_moe_90": 421,
      "b_to_a": 284,
      "b_to_a_moe_90": 305,
      "gross_exchange": 767,
      "directional_balance": 199,
      "dominant_direction": "Indiana to Kansas",
      "main_flow": 483,
      "reverse_flow": 284,
      "reverse_share_of_main": 0.588
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 435,
      "a_to_b_moe_90": 418,
      "b_to_a": 332,
      "b_to_a_moe_90": 375,
      "gross_exchange": 767,
      "directional_balance": 103,
      "dominant_direction": "Iowa to Oklahoma",
      "main_flow": 435,
      "reverse_flow": 332,
      "reverse_share_of_main": 0.7632
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 765,
      "a_to_b_moe_90": 941,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 765,
      "directional_balance": 765,
      "dominant_direction": "Delaware to Washington",
      "main_flow": 765,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 440,
      "a_to_b_moe_90": 442,
      "b_to_a": 324,
      "b_to_a_moe_90": 447,
      "gross_exchange": 764,
      "directional_balance": 116,
      "dominant_direction": "Arkansas to South Carolina",
      "main_flow": 440,
      "reverse_flow": 324,
      "reverse_share_of_main": 0.7364
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 763,
      "b_to_a_moe_90": 471,
      "gross_exchange": 763,
      "directional_balance": 763,
      "dominant_direction": "Wisconsin to District of Columbia",
      "main_flow": 763,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 763,
      "b_to_a_moe_90": 604,
      "gross_exchange": 763,
      "directional_balance": 763,
      "dominant_direction": "New Mexico to District of Columbia",
      "main_flow": 763,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 76,
      "a_to_b_moe_90": 130,
      "b_to_a": 685,
      "b_to_a_moe_90": 728,
      "gross_exchange": 761,
      "directional_balance": 609,
      "dominant_direction": "Michigan to Arkansas",
      "main_flow": 685,
      "reverse_flow": 76,
      "reverse_share_of_main": 0.1109
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 578,
      "a_to_b_moe_90": 436,
      "b_to_a": 173,
      "b_to_a_moe_90": 189,
      "gross_exchange": 751,
      "directional_balance": 405,
      "dominant_direction": "Georgia to Utah",
      "main_flow": 578,
      "reverse_flow": 173,
      "reverse_share_of_main": 0.2993
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 473,
      "a_to_b_moe_90": 394,
      "b_to_a": 278,
      "b_to_a_moe_90": 306,
      "gross_exchange": 751,
      "directional_balance": 195,
      "dominant_direction": "Massachusetts to Montana",
      "main_flow": 473,
      "reverse_flow": 278,
      "reverse_share_of_main": 0.5877
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 439,
      "a_to_b_moe_90": 364,
      "b_to_a": 303,
      "b_to_a_moe_90": 310,
      "gross_exchange": 742,
      "directional_balance": 136,
      "dominant_direction": "District of Columbia to Oregon",
      "main_flow": 439,
      "reverse_flow": 303,
      "reverse_share_of_main": 0.6902
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 739,
      "a_to_b_moe_90": 1202,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 739,
      "directional_balance": 739,
      "dominant_direction": "New York to South Dakota",
      "main_flow": 739,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 690,
      "a_to_b_moe_90": 539,
      "b_to_a": 49,
      "b_to_a_moe_90": 108,
      "gross_exchange": 739,
      "directional_balance": 641,
      "dominant_direction": "Kansas to South Dakota",
      "main_flow": 690,
      "reverse_flow": 49,
      "reverse_share_of_main": 0.071
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 374,
      "a_to_b_moe_90": 355,
      "b_to_a": 365,
      "b_to_a_moe_90": 371,
      "gross_exchange": 739,
      "directional_balance": 9,
      "dominant_direction": "Indiana to New Mexico",
      "main_flow": 374,
      "reverse_flow": 365,
      "reverse_share_of_main": 0.9759
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 231,
      "a_to_b_moe_90": 335,
      "b_to_a": 503,
      "b_to_a_moe_90": 750,
      "gross_exchange": 734,
      "directional_balance": 272,
      "dominant_direction": "West Virginia to New Mexico",
      "main_flow": 503,
      "reverse_flow": 231,
      "reverse_share_of_main": 0.4592
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 197,
      "a_to_b_moe_90": 300,
      "b_to_a": 532,
      "b_to_a_moe_90": 440,
      "gross_exchange": 729,
      "directional_balance": 335,
      "dominant_direction": "Michigan to Hawaii",
      "main_flow": 532,
      "reverse_flow": 197,
      "reverse_share_of_main": 0.3703
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 728,
      "b_to_a_moe_90": 1148,
      "gross_exchange": 728,
      "directional_balance": 728,
      "dominant_direction": "North Dakota to Maryland",
      "main_flow": 728,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 365,
      "a_to_b_moe_90": 616,
      "b_to_a": 357,
      "b_to_a_moe_90": 628,
      "gross_exchange": 722,
      "directional_balance": 8,
      "dominant_direction": "Nebraska to Tennessee",
      "main_flow": 365,
      "reverse_flow": 357,
      "reverse_share_of_main": 0.9781
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 246,
      "a_to_b_moe_90": 325,
      "b_to_a": 475,
      "b_to_a_moe_90": 511,
      "gross_exchange": 721,
      "directional_balance": 229,
      "dominant_direction": "South Dakota to Michigan",
      "main_flow": 475,
      "reverse_flow": 246,
      "reverse_share_of_main": 0.5179
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 110,
      "a_to_b_moe_90": 191,
      "b_to_a": 610,
      "b_to_a_moe_90": 620,
      "gross_exchange": 720,
      "directional_balance": 500,
      "dominant_direction": "South Dakota to New Mexico",
      "main_flow": 610,
      "reverse_flow": 110,
      "reverse_share_of_main": 0.1803
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 217,
      "a_to_b_moe_90": 509,
      "b_to_a": 501,
      "b_to_a_moe_90": 569,
      "gross_exchange": 718,
      "directional_balance": 284,
      "dominant_direction": "Oregon to Maryland",
      "main_flow": 501,
      "reverse_flow": 217,
      "reverse_share_of_main": 0.4331
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 582,
      "a_to_b_moe_90": 623,
      "b_to_a": 132,
      "b_to_a_moe_90": 218,
      "gross_exchange": 714,
      "directional_balance": 450,
      "dominant_direction": "Alaska to New Mexico",
      "main_flow": 582,
      "reverse_flow": 132,
      "reverse_share_of_main": 0.2268
    },
    {
      "state_a": "Utah",
      "state_a_fips": "49",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 34,
      "a_to_b_moe_90": 49,
      "b_to_a": 678,
      "b_to_a_moe_90": 612,
      "gross_exchange": 712,
      "directional_balance": 644,
      "dominant_direction": "Wisconsin to Utah",
      "main_flow": 678,
      "reverse_flow": 34,
      "reverse_share_of_main": 0.0501
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 100,
      "a_to_b_moe_90": 185,
      "b_to_a": 605,
      "b_to_a_moe_90": 890,
      "gross_exchange": 705,
      "directional_balance": 505,
      "dominant_direction": "Massachusetts to Alaska",
      "main_flow": 605,
      "reverse_flow": 100,
      "reverse_share_of_main": 0.1653
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 567,
      "a_to_b_moe_90": 592,
      "b_to_a": 135,
      "b_to_a_moe_90": 93,
      "gross_exchange": 702,
      "directional_balance": 432,
      "dominant_direction": "New Mexico to Wyoming",
      "main_flow": 567,
      "reverse_flow": 135,
      "reverse_share_of_main": 0.2381
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 127,
      "a_to_b_moe_90": 243,
      "b_to_a": 569,
      "b_to_a_moe_90": 653,
      "gross_exchange": 696,
      "directional_balance": 442,
      "dominant_direction": "South Dakota to Mississippi",
      "main_flow": 569,
      "reverse_flow": 127,
      "reverse_share_of_main": 0.2232
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 607,
      "a_to_b_moe_90": 540,
      "b_to_a": 87,
      "b_to_a_moe_90": 134,
      "gross_exchange": 694,
      "directional_balance": 520,
      "dominant_direction": "Minnesota to Virginia",
      "main_flow": 607,
      "reverse_flow": 87,
      "reverse_share_of_main": 0.1433
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 89,
      "a_to_b_moe_90": 106,
      "b_to_a": 604,
      "b_to_a_moe_90": 872,
      "gross_exchange": 693,
      "directional_balance": 515,
      "dominant_direction": "New Jersey to Idaho",
      "main_flow": 604,
      "reverse_flow": 89,
      "reverse_share_of_main": 0.1474
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 227,
      "a_to_b_moe_90": 225,
      "b_to_a": 465,
      "b_to_a_moe_90": 725,
      "gross_exchange": 692,
      "directional_balance": 238,
      "dominant_direction": "Wisconsin to North Dakota",
      "main_flow": 465,
      "reverse_flow": 227,
      "reverse_share_of_main": 0.4882
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Delaware",
      "state_b_fips": "10",
      "a_to_b": 687,
      "a_to_b_moe_90": 1082,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 687,
      "directional_balance": 687,
      "dominant_direction": "Alabama to Delaware",
      "main_flow": 687,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 304,
      "a_to_b_moe_90": 353,
      "b_to_a": 383,
      "b_to_a_moe_90": 495,
      "gross_exchange": 687,
      "directional_balance": 79,
      "dominant_direction": "Tennessee to New Hampshire",
      "main_flow": 383,
      "reverse_flow": 304,
      "reverse_share_of_main": 0.7937
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "North Carolina",
      "state_b_fips": "37",
      "a_to_b": 522,
      "a_to_b_moe_90": 473,
      "b_to_a": 157,
      "b_to_a_moe_90": 217,
      "gross_exchange": 679,
      "directional_balance": 365,
      "dominant_direction": "Nebraska to North Carolina",
      "main_flow": 522,
      "reverse_flow": 157,
      "reverse_share_of_main": 0.3008
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 447,
      "a_to_b_moe_90": 745,
      "b_to_a": 232,
      "b_to_a_moe_90": 232,
      "gross_exchange": 679,
      "directional_balance": 215,
      "dominant_direction": "North Carolina to Vermont",
      "main_flow": 447,
      "reverse_flow": 232,
      "reverse_share_of_main": 0.519
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 241,
      "a_to_b_moe_90": 294,
      "b_to_a": 435,
      "b_to_a_moe_90": 432,
      "gross_exchange": 676,
      "directional_balance": 194,
      "dominant_direction": "Massachusetts to Kentucky",
      "main_flow": 435,
      "reverse_flow": 241,
      "reverse_share_of_main": 0.554
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 343,
      "a_to_b_moe_90": 274,
      "b_to_a": 333,
      "b_to_a_moe_90": 506,
      "gross_exchange": 676,
      "directional_balance": 10,
      "dominant_direction": "Maine to Oregon",
      "main_flow": 343,
      "reverse_flow": 333,
      "reverse_share_of_main": 0.9708
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 670,
      "b_to_a_moe_90": 585,
      "gross_exchange": 670,
      "directional_balance": 670,
      "dominant_direction": "Utah to Kansas",
      "main_flow": 670,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 411,
      "a_to_b_moe_90": 416,
      "b_to_a": 258,
      "b_to_a_moe_90": 559,
      "gross_exchange": 669,
      "directional_balance": 153,
      "dominant_direction": "Rhode Island to Vermont",
      "main_flow": 411,
      "reverse_flow": 258,
      "reverse_share_of_main": 0.6277
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 479,
      "a_to_b_moe_90": 495,
      "b_to_a": 189,
      "b_to_a_moe_90": 232,
      "gross_exchange": 668,
      "directional_balance": 290,
      "dominant_direction": "District of Columbia to Maine",
      "main_flow": 479,
      "reverse_flow": 189,
      "reverse_share_of_main": 0.3946
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 123,
      "a_to_b_moe_90": 224,
      "b_to_a": 544,
      "b_to_a_moe_90": 662,
      "gross_exchange": 667,
      "directional_balance": 421,
      "dominant_direction": "South Dakota to Indiana",
      "main_flow": 544,
      "reverse_flow": 123,
      "reverse_share_of_main": 0.2261
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 197,
      "a_to_b_moe_90": 343,
      "b_to_a": 469,
      "b_to_a_moe_90": 506,
      "gross_exchange": 666,
      "directional_balance": 272,
      "dominant_direction": "New Jersey to Arkansas",
      "main_flow": 469,
      "reverse_flow": 197,
      "reverse_share_of_main": 0.42
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 236,
      "a_to_b_moe_90": 228,
      "b_to_a": 430,
      "b_to_a_moe_90": 546,
      "gross_exchange": 666,
      "directional_balance": 194,
      "dominant_direction": "New Jersey to Montana",
      "main_flow": 430,
      "reverse_flow": 236,
      "reverse_share_of_main": 0.5488
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 624,
      "a_to_b_moe_90": 619,
      "b_to_a": 40,
      "b_to_a_moe_90": 69,
      "gross_exchange": 664,
      "directional_balance": 584,
      "dominant_direction": "Alaska to Missouri",
      "main_flow": 624,
      "reverse_flow": 40,
      "reverse_share_of_main": 0.0641
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 659,
      "a_to_b_moe_90": 666,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 659,
      "directional_balance": 659,
      "dominant_direction": "Montana to Tennessee",
      "main_flow": 659,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 166,
      "a_to_b_moe_90": 277,
      "b_to_a": 491,
      "b_to_a_moe_90": 616,
      "gross_exchange": 657,
      "directional_balance": 325,
      "dominant_direction": "Oregon to Kentucky",
      "main_flow": 491,
      "reverse_flow": 166,
      "reverse_share_of_main": 0.3381
    },
    {
      "state_a": "Utah",
      "state_a_fips": "49",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 652,
      "a_to_b_moe_90": 570,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 652,
      "directional_balance": 652,
      "dominant_direction": "Utah to Vermont",
      "main_flow": 652,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 285,
      "a_to_b_moe_90": 276,
      "b_to_a": 366,
      "b_to_a_moe_90": 436,
      "gross_exchange": 651,
      "directional_balance": 81,
      "dominant_direction": "Rhode Island to District of Columbia",
      "main_flow": 366,
      "reverse_flow": 285,
      "reverse_share_of_main": 0.7787
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 370,
      "a_to_b_moe_90": 355,
      "b_to_a": 272,
      "b_to_a_moe_90": 336,
      "gross_exchange": 642,
      "directional_balance": 98,
      "dominant_direction": "Arkansas to Utah",
      "main_flow": 370,
      "reverse_flow": 272,
      "reverse_share_of_main": 0.7351
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 430,
      "a_to_b_moe_90": 479,
      "b_to_a": 207,
      "b_to_a_moe_90": 252,
      "gross_exchange": 637,
      "directional_balance": 223,
      "dominant_direction": "Hawaii to Wisconsin",
      "main_flow": 430,
      "reverse_flow": 207,
      "reverse_share_of_main": 0.4814
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 309,
      "a_to_b_moe_90": 252,
      "b_to_a": 328,
      "b_to_a_moe_90": 291,
      "gross_exchange": 637,
      "directional_balance": 19,
      "dominant_direction": "Kentucky to Idaho",
      "main_flow": 328,
      "reverse_flow": 309,
      "reverse_share_of_main": 0.9421
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 554,
      "a_to_b_moe_90": 624,
      "b_to_a": 82,
      "b_to_a_moe_90": 132,
      "gross_exchange": 636,
      "directional_balance": 472,
      "dominant_direction": "Idaho to South Carolina",
      "main_flow": 554,
      "reverse_flow": 82,
      "reverse_share_of_main": 0.148
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 318,
      "a_to_b_moe_90": 480,
      "b_to_a": 317,
      "b_to_a_moe_90": 507,
      "gross_exchange": 635,
      "directional_balance": 1,
      "dominant_direction": "Kansas to New Hampshire",
      "main_flow": 318,
      "reverse_flow": 317,
      "reverse_share_of_main": 0.9969
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 199,
      "a_to_b_moe_90": 269,
      "b_to_a": 434,
      "b_to_a_moe_90": 493,
      "gross_exchange": 633,
      "directional_balance": 235,
      "dominant_direction": "Tennessee to Maine",
      "main_flow": 434,
      "reverse_flow": 199,
      "reverse_share_of_main": 0.4585
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 504,
      "a_to_b_moe_90": 586,
      "b_to_a": 127,
      "b_to_a_moe_90": 157,
      "gross_exchange": 631,
      "directional_balance": 377,
      "dominant_direction": "Illinois to Maine",
      "main_flow": 504,
      "reverse_flow": 127,
      "reverse_share_of_main": 0.252
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Ohio",
      "state_b_fips": "39",
      "a_to_b": 136,
      "a_to_b_moe_90": 193,
      "b_to_a": 494,
      "b_to_a_moe_90": 497,
      "gross_exchange": 630,
      "directional_balance": 358,
      "dominant_direction": "Ohio to Maine",
      "main_flow": 494,
      "reverse_flow": 136,
      "reverse_share_of_main": 0.2753
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 502,
      "a_to_b_moe_90": 464,
      "b_to_a": 124,
      "b_to_a_moe_90": 204,
      "gross_exchange": 626,
      "directional_balance": 378,
      "dominant_direction": "Oregon to Wyoming",
      "main_flow": 502,
      "reverse_flow": 124,
      "reverse_share_of_main": 0.247
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 229,
      "a_to_b_moe_90": 307,
      "b_to_a": 396,
      "b_to_a_moe_90": 457,
      "gross_exchange": 625,
      "directional_balance": 167,
      "dominant_direction": "Illinois to Hawaii",
      "main_flow": 396,
      "reverse_flow": 229,
      "reverse_share_of_main": 0.5783
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 65,
      "a_to_b_moe_90": 110,
      "b_to_a": 558,
      "b_to_a_moe_90": 636,
      "gross_exchange": 623,
      "directional_balance": 493,
      "dominant_direction": "Wisconsin to Montana",
      "main_flow": 558,
      "reverse_flow": 65,
      "reverse_share_of_main": 0.1165
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 137,
      "a_to_b_moe_90": 201,
      "b_to_a": 484,
      "b_to_a_moe_90": 564,
      "gross_exchange": 621,
      "directional_balance": 347,
      "dominant_direction": "Mississippi to Arizona",
      "main_flow": 484,
      "reverse_flow": 137,
      "reverse_share_of_main": 0.2831
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 476,
      "a_to_b_moe_90": 554,
      "b_to_a": 141,
      "b_to_a_moe_90": 220,
      "gross_exchange": 617,
      "directional_balance": 335,
      "dominant_direction": "Illinois to New Hampshire",
      "main_flow": 476,
      "reverse_flow": 141,
      "reverse_share_of_main": 0.2962
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 65,
      "a_to_b_moe_90": 116,
      "b_to_a": 551,
      "b_to_a_moe_90": 420,
      "gross_exchange": 616,
      "directional_balance": 486,
      "dominant_direction": "Iowa to Alabama",
      "main_flow": 551,
      "reverse_flow": 65,
      "reverse_share_of_main": 0.118
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 154,
      "a_to_b_moe_90": 256,
      "b_to_a": 452,
      "b_to_a_moe_90": 697,
      "gross_exchange": 606,
      "directional_balance": 298,
      "dominant_direction": "Maine to Indiana",
      "main_flow": 452,
      "reverse_flow": 154,
      "reverse_share_of_main": 0.3407
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 243,
      "a_to_b_moe_90": 309,
      "b_to_a": 361,
      "b_to_a_moe_90": 469,
      "gross_exchange": 604,
      "directional_balance": 118,
      "dominant_direction": "New Jersey to Kansas",
      "main_flow": 361,
      "reverse_flow": 243,
      "reverse_share_of_main": 0.6731
    },
    {
      "state_a": "West Virginia",
      "state_a_fips": "54",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 82,
      "a_to_b_moe_90": 135,
      "b_to_a": 520,
      "b_to_a_moe_90": 525,
      "gross_exchange": 602,
      "directional_balance": 438,
      "dominant_direction": "Wisconsin to West Virginia",
      "main_flow": 520,
      "reverse_flow": 82,
      "reverse_share_of_main": 0.1577
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 208,
      "a_to_b_moe_90": 242,
      "b_to_a": 392,
      "b_to_a_moe_90": 693,
      "gross_exchange": 600,
      "directional_balance": 184,
      "dominant_direction": "Oregon to Alabama",
      "main_flow": 392,
      "reverse_flow": 208,
      "reverse_share_of_main": 0.5306
    },
    {
      "state_a": "Tennessee",
      "state_a_fips": "47",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 516,
      "a_to_b_moe_90": 533,
      "b_to_a": 82,
      "b_to_a_moe_90": 138,
      "gross_exchange": 598,
      "directional_balance": 434,
      "dominant_direction": "Tennessee to Vermont",
      "main_flow": 516,
      "reverse_flow": 82,
      "reverse_share_of_main": 0.1589
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 91,
      "a_to_b_moe_90": 124,
      "b_to_a": 507,
      "b_to_a_moe_90": 701,
      "gross_exchange": 598,
      "directional_balance": 416,
      "dominant_direction": "Wyoming to Missouri",
      "main_flow": 507,
      "reverse_flow": 91,
      "reverse_share_of_main": 0.1795
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 172,
      "a_to_b_moe_90": 285,
      "b_to_a": 422,
      "b_to_a_moe_90": 412,
      "gross_exchange": 594,
      "directional_balance": 250,
      "dominant_direction": "Oklahoma to District of Columbia",
      "main_flow": 422,
      "reverse_flow": 172,
      "reverse_share_of_main": 0.4076
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 330,
      "a_to_b_moe_90": 317,
      "b_to_a": 263,
      "b_to_a_moe_90": 508,
      "gross_exchange": 593,
      "directional_balance": 67,
      "dominant_direction": "Oregon to Rhode Island",
      "main_flow": 330,
      "reverse_flow": 263,
      "reverse_share_of_main": 0.797
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 160,
      "a_to_b_moe_90": 260,
      "b_to_a": 431,
      "b_to_a_moe_90": 452,
      "gross_exchange": 591,
      "directional_balance": 271,
      "dominant_direction": "West Virginia to Hawaii",
      "main_flow": 431,
      "reverse_flow": 160,
      "reverse_share_of_main": 0.3712
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 587,
      "a_to_b_moe_90": 620,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 587,
      "directional_balance": 587,
      "dominant_direction": "Connecticut to West Virginia",
      "main_flow": 587,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 511,
      "a_to_b_moe_90": 613,
      "b_to_a": 76,
      "b_to_a_moe_90": 142,
      "gross_exchange": 587,
      "directional_balance": 435,
      "dominant_direction": "Alaska to Maine",
      "main_flow": 511,
      "reverse_flow": 76,
      "reverse_share_of_main": 0.1487
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 189,
      "a_to_b_moe_90": 213,
      "b_to_a": 395,
      "b_to_a_moe_90": 525,
      "gross_exchange": 584,
      "directional_balance": 206,
      "dominant_direction": "Oregon to Iowa",
      "main_flow": 395,
      "reverse_flow": 189,
      "reverse_share_of_main": 0.4785
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 291,
      "a_to_b_moe_90": 308,
      "b_to_a": 292,
      "b_to_a_moe_90": 274,
      "gross_exchange": 583,
      "directional_balance": 1,
      "dominant_direction": "Vermont to Colorado",
      "main_flow": 292,
      "reverse_flow": 291,
      "reverse_share_of_main": 0.9966
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 229,
      "a_to_b_moe_90": 276,
      "b_to_a": 353,
      "b_to_a_moe_90": 411,
      "gross_exchange": 582,
      "directional_balance": 124,
      "dominant_direction": "Maryland to Indiana",
      "main_flow": 353,
      "reverse_flow": 229,
      "reverse_share_of_main": 0.6487
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 361,
      "a_to_b_moe_90": 315,
      "b_to_a": 220,
      "b_to_a_moe_90": 276,
      "gross_exchange": 581,
      "directional_balance": 141,
      "dominant_direction": "Kansas to Mississippi",
      "main_flow": 361,
      "reverse_flow": 220,
      "reverse_share_of_main": 0.6094
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 340,
      "a_to_b_moe_90": 542,
      "b_to_a": 235,
      "b_to_a_moe_90": 276,
      "gross_exchange": 575,
      "directional_balance": 105,
      "dominant_direction": "Idaho to Maryland",
      "main_flow": 340,
      "reverse_flow": 235,
      "reverse_share_of_main": 0.6912
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 449,
      "a_to_b_moe_90": 270,
      "b_to_a": 125,
      "b_to_a_moe_90": 165,
      "gross_exchange": 574,
      "directional_balance": 324,
      "dominant_direction": "Alabama to Maine",
      "main_flow": 449,
      "reverse_flow": 125,
      "reverse_share_of_main": 0.2784
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 533,
      "a_to_b_moe_90": 577,
      "b_to_a": 38,
      "b_to_a_moe_90": 68,
      "gross_exchange": 571,
      "directional_balance": 495,
      "dominant_direction": "Pennsylvania to Wyoming",
      "main_flow": 533,
      "reverse_flow": 38,
      "reverse_share_of_main": 0.0713
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 275,
      "a_to_b_moe_90": 315,
      "b_to_a": 289,
      "b_to_a_moe_90": 257,
      "gross_exchange": 564,
      "directional_balance": 14,
      "dominant_direction": "Wisconsin to Kentucky",
      "main_flow": 289,
      "reverse_flow": 275,
      "reverse_share_of_main": 0.9516
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 233,
      "a_to_b_moe_90": 380,
      "b_to_a": 321,
      "b_to_a_moe_90": 500,
      "gross_exchange": 554,
      "directional_balance": 88,
      "dominant_direction": "Oklahoma to Montana",
      "main_flow": 321,
      "reverse_flow": 233,
      "reverse_share_of_main": 0.7259
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 551,
      "b_to_a_moe_90": 448,
      "gross_exchange": 551,
      "directional_balance": 551,
      "dominant_direction": "New Jersey to Maine",
      "main_flow": 551,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 177,
      "a_to_b_moe_90": 287,
      "b_to_a": 373,
      "b_to_a_moe_90": 568,
      "gross_exchange": 550,
      "directional_balance": 196,
      "dominant_direction": "Rhode Island to Michigan",
      "main_flow": 373,
      "reverse_flow": 177,
      "reverse_share_of_main": 0.4745
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 549,
      "b_to_a_moe_90": 560,
      "gross_exchange": 549,
      "directional_balance": 549,
      "dominant_direction": "Nevada to Nebraska",
      "main_flow": 549,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 212,
      "a_to_b_moe_90": 263,
      "b_to_a": 336,
      "b_to_a_moe_90": 559,
      "gross_exchange": 548,
      "directional_balance": 124,
      "dominant_direction": "West Virginia to Montana",
      "main_flow": 336,
      "reverse_flow": 212,
      "reverse_share_of_main": 0.631
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 368,
      "a_to_b_moe_90": 570,
      "b_to_a": 176,
      "b_to_a_moe_90": 239,
      "gross_exchange": 544,
      "directional_balance": 192,
      "dominant_direction": "New Hampshire to Washington",
      "main_flow": 368,
      "reverse_flow": 176,
      "reverse_share_of_main": 0.4783
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Alaska",
      "state_b_fips": "02",
      "a_to_b": 26,
      "a_to_b_moe_90": 49,
      "b_to_a": 517,
      "b_to_a_moe_90": 540,
      "gross_exchange": 543,
      "directional_balance": 491,
      "dominant_direction": "Alaska to Alabama",
      "main_flow": 517,
      "reverse_flow": 26,
      "reverse_share_of_main": 0.0503
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 295,
      "a_to_b_moe_90": 423,
      "b_to_a": 241,
      "b_to_a_moe_90": 413,
      "gross_exchange": 536,
      "directional_balance": 54,
      "dominant_direction": "New Hampshire to Oregon",
      "main_flow": 295,
      "reverse_flow": 241,
      "reverse_share_of_main": 0.8169
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 392,
      "a_to_b_moe_90": 366,
      "b_to_a": 139,
      "b_to_a_moe_90": 301,
      "gross_exchange": 531,
      "directional_balance": 253,
      "dominant_direction": "Hawaii to Indiana",
      "main_flow": 392,
      "reverse_flow": 139,
      "reverse_share_of_main": 0.3546
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 250,
      "a_to_b_moe_90": 417,
      "b_to_a": 281,
      "b_to_a_moe_90": 487,
      "gross_exchange": 531,
      "directional_balance": 31,
      "dominant_direction": "New Hampshire to Nebraska",
      "main_flow": 281,
      "reverse_flow": 250,
      "reverse_share_of_main": 0.8897
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 526,
      "b_to_a_moe_90": 777,
      "gross_exchange": 526,
      "directional_balance": 526,
      "dominant_direction": "Iowa to Delaware",
      "main_flow": 526,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 88,
      "a_to_b_moe_90": 165,
      "b_to_a": 434,
      "b_to_a_moe_90": 718,
      "gross_exchange": 522,
      "directional_balance": 346,
      "dominant_direction": "Oklahoma to Kentucky",
      "main_flow": 434,
      "reverse_flow": 88,
      "reverse_share_of_main": 0.2028
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 516,
      "b_to_a_moe_90": 451,
      "gross_exchange": 516,
      "directional_balance": 516,
      "dominant_direction": "New Hampshire to Indiana",
      "main_flow": 516,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Idaho",
      "state_b_fips": "16",
      "a_to_b": 90,
      "a_to_b_moe_90": 152,
      "b_to_a": 425,
      "b_to_a_moe_90": 474,
      "gross_exchange": 515,
      "directional_balance": 335,
      "dominant_direction": "Idaho to Georgia",
      "main_flow": 425,
      "reverse_flow": 90,
      "reverse_share_of_main": 0.2118
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 423,
      "a_to_b_moe_90": 367,
      "b_to_a": 91,
      "b_to_a_moe_90": 158,
      "gross_exchange": 514,
      "directional_balance": 332,
      "dominant_direction": "Nebraska to Oregon",
      "main_flow": 423,
      "reverse_flow": 91,
      "reverse_share_of_main": 0.2151
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 353,
      "a_to_b_moe_90": 272,
      "b_to_a": 159,
      "b_to_a_moe_90": 257,
      "gross_exchange": 512,
      "directional_balance": 194,
      "dominant_direction": "Kansas to Massachusetts",
      "main_flow": 353,
      "reverse_flow": 159,
      "reverse_share_of_main": 0.4504
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 267,
      "a_to_b_moe_90": 443,
      "b_to_a": 244,
      "b_to_a_moe_90": 396,
      "gross_exchange": 511,
      "directional_balance": 23,
      "dominant_direction": "Kentucky to Rhode Island",
      "main_flow": 267,
      "reverse_flow": 244,
      "reverse_share_of_main": 0.9139
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 318,
      "a_to_b_moe_90": 384,
      "b_to_a": 192,
      "b_to_a_moe_90": 433,
      "gross_exchange": 510,
      "directional_balance": 126,
      "dominant_direction": "North Dakota to Tennessee",
      "main_flow": 318,
      "reverse_flow": 192,
      "reverse_share_of_main": 0.6038
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 508,
      "a_to_b_moe_90": 461,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 508,
      "directional_balance": 508,
      "dominant_direction": "Louisiana to Massachusetts",
      "main_flow": 508,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 142,
      "a_to_b_moe_90": 210,
      "b_to_a": 365,
      "b_to_a_moe_90": 457,
      "gross_exchange": 507,
      "directional_balance": 223,
      "dominant_direction": "West Virginia to Colorado",
      "main_flow": 365,
      "reverse_flow": 142,
      "reverse_share_of_main": 0.389
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 506,
      "b_to_a_moe_90": 413,
      "gross_exchange": 506,
      "directional_balance": 506,
      "dominant_direction": "Minnesota to District of Columbia",
      "main_flow": 506,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 5,
      "a_to_b_moe_90": 24,
      "b_to_a": 499,
      "b_to_a_moe_90": 614,
      "gross_exchange": 504,
      "directional_balance": 494,
      "dominant_direction": "Nebraska to Alabama",
      "main_flow": 499,
      "reverse_flow": 5,
      "reverse_share_of_main": 0.01
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 318,
      "a_to_b_moe_90": 358,
      "b_to_a": 174,
      "b_to_a_moe_90": 158,
      "gross_exchange": 492,
      "directional_balance": 144,
      "dominant_direction": "Minnesota to Wyoming",
      "main_flow": 318,
      "reverse_flow": 174,
      "reverse_share_of_main": 0.5472
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 457,
      "a_to_b_moe_90": 757,
      "b_to_a": 33,
      "b_to_a_moe_90": 62,
      "gross_exchange": 490,
      "directional_balance": 424,
      "dominant_direction": "Idaho to Vermont",
      "main_flow": 457,
      "reverse_flow": 33,
      "reverse_share_of_main": 0.0722
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 392,
      "a_to_b_moe_90": 308,
      "b_to_a": 96,
      "b_to_a_moe_90": 177,
      "gross_exchange": 488,
      "directional_balance": 296,
      "dominant_direction": "Montana to Nevada",
      "main_flow": 392,
      "reverse_flow": 96,
      "reverse_share_of_main": 0.2449
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 486,
      "a_to_b_moe_90": 510,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 486,
      "directional_balance": 486,
      "dominant_direction": "Nebraska to New Jersey",
      "main_flow": 486,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 74,
      "a_to_b_moe_90": 120,
      "b_to_a": 411,
      "b_to_a_moe_90": 404,
      "gross_exchange": 485,
      "directional_balance": 337,
      "dominant_direction": "Kentucky to Hawaii",
      "main_flow": 411,
      "reverse_flow": 74,
      "reverse_share_of_main": 0.18
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 295,
      "a_to_b_moe_90": 296,
      "b_to_a": 188,
      "b_to_a_moe_90": 219,
      "gross_exchange": 483,
      "directional_balance": 107,
      "dominant_direction": "Nebraska to Oklahoma",
      "main_flow": 295,
      "reverse_flow": 188,
      "reverse_share_of_main": 0.6373
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 482,
      "a_to_b_moe_90": 772,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 482,
      "directional_balance": 482,
      "dominant_direction": "North Dakota to West Virginia",
      "main_flow": 482,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 346,
      "a_to_b_moe_90": 341,
      "b_to_a": 133,
      "b_to_a_moe_90": 232,
      "gross_exchange": 479,
      "directional_balance": 213,
      "dominant_direction": "Arizona to West Virginia",
      "main_flow": 346,
      "reverse_flow": 133,
      "reverse_share_of_main": 0.3844
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 126,
      "a_to_b_moe_90": 250,
      "b_to_a": 352,
      "b_to_a_moe_90": 452,
      "gross_exchange": 478,
      "directional_balance": 226,
      "dominant_direction": "South Dakota to Kentucky",
      "main_flow": 352,
      "reverse_flow": 126,
      "reverse_share_of_main": 0.358
    },
    {
      "state_a": "South Dakota",
      "state_a_fips": "46",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 445,
      "a_to_b_moe_90": 682,
      "b_to_a": 24,
      "b_to_a_moe_90": 54,
      "gross_exchange": 469,
      "directional_balance": 421,
      "dominant_direction": "South Dakota to Wisconsin",
      "main_flow": 445,
      "reverse_flow": 24,
      "reverse_share_of_main": 0.0539
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 410,
      "a_to_b_moe_90": 529,
      "b_to_a": 58,
      "b_to_a_moe_90": 94,
      "gross_exchange": 468,
      "directional_balance": 352,
      "dominant_direction": "Missouri to North Dakota",
      "main_flow": 410,
      "reverse_flow": 58,
      "reverse_share_of_main": 0.1415
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 467,
      "b_to_a_moe_90": 599,
      "gross_exchange": 467,
      "directional_balance": 467,
      "dominant_direction": "South Carolina to Montana",
      "main_flow": 467,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 465,
      "b_to_a_moe_90": 438,
      "gross_exchange": 465,
      "directional_balance": 465,
      "dominant_direction": "West Virginia to Arkansas",
      "main_flow": 465,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Delaware",
      "state_b_fips": "10",
      "a_to_b": 461,
      "a_to_b_moe_90": 430,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 461,
      "directional_balance": 461,
      "dominant_direction": "Connecticut to Delaware",
      "main_flow": 461,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 8,
      "a_to_b_moe_90": 17,
      "b_to_a": 450,
      "b_to_a_moe_90": 360,
      "gross_exchange": 458,
      "directional_balance": 442,
      "dominant_direction": "Nebraska to Kentucky",
      "main_flow": 450,
      "reverse_flow": 8,
      "reverse_share_of_main": 0.0178
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 457,
      "a_to_b_moe_90": 539,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 457,
      "directional_balance": 457,
      "dominant_direction": "Arkansas to District of Columbia",
      "main_flow": 457,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 109,
      "a_to_b_moe_90": 185,
      "b_to_a": 342,
      "b_to_a_moe_90": 352,
      "gross_exchange": 451,
      "directional_balance": 233,
      "dominant_direction": "Wyoming to Nebraska",
      "main_flow": 342,
      "reverse_flow": 109,
      "reverse_share_of_main": 0.3187
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Delaware",
      "state_b_fips": "10",
      "a_to_b": 191,
      "a_to_b_moe_90": 298,
      "b_to_a": 256,
      "b_to_a_moe_90": 318,
      "gross_exchange": 447,
      "directional_balance": 65,
      "dominant_direction": "Delaware to Arizona",
      "main_flow": 256,
      "reverse_flow": 191,
      "reverse_share_of_main": 0.7461
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 340,
      "a_to_b_moe_90": 365,
      "b_to_a": 106,
      "b_to_a_moe_90": 137,
      "gross_exchange": 446,
      "directional_balance": 234,
      "dominant_direction": "District of Columbia to New Hampshire",
      "main_flow": 340,
      "reverse_flow": 106,
      "reverse_share_of_main": 0.3118
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 148,
      "a_to_b_moe_90": 211,
      "b_to_a": 298,
      "b_to_a_moe_90": 540,
      "gross_exchange": 446,
      "directional_balance": 150,
      "dominant_direction": "Wyoming to Alaska",
      "main_flow": 298,
      "reverse_flow": 148,
      "reverse_share_of_main": 0.4966
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 439,
      "a_to_b_moe_90": 619,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 439,
      "directional_balance": 439,
      "dominant_direction": "Illinois to Rhode Island",
      "main_flow": 439,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 214,
      "a_to_b_moe_90": 217,
      "b_to_a": 224,
      "b_to_a_moe_90": 209,
      "gross_exchange": 438,
      "directional_balance": 10,
      "dominant_direction": "Nebraska to Arkansas",
      "main_flow": 224,
      "reverse_flow": 214,
      "reverse_share_of_main": 0.9554
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 352,
      "a_to_b_moe_90": 317,
      "b_to_a": 80,
      "b_to_a_moe_90": 132,
      "gross_exchange": 432,
      "directional_balance": 272,
      "dominant_direction": "Connecticut to Minnesota",
      "main_flow": 352,
      "reverse_flow": 80,
      "reverse_share_of_main": 0.2273
    },
    {
      "state_a": "North Carolina",
      "state_a_fips": "37",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 63,
      "a_to_b_moe_90": 116,
      "b_to_a": 368,
      "b_to_a_moe_90": 386,
      "gross_exchange": 431,
      "directional_balance": 305,
      "dominant_direction": "South Dakota to North Carolina",
      "main_flow": 368,
      "reverse_flow": 63,
      "reverse_share_of_main": 0.1712
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 384,
      "a_to_b_moe_90": 644,
      "b_to_a": 45,
      "b_to_a_moe_90": 66,
      "gross_exchange": 429,
      "directional_balance": 339,
      "dominant_direction": "Mississippi to New Jersey",
      "main_flow": 384,
      "reverse_flow": 45,
      "reverse_share_of_main": 0.1172
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 423,
      "b_to_a_moe_90": 649,
      "gross_exchange": 423,
      "directional_balance": 423,
      "dominant_direction": "West Virginia to Alaska",
      "main_flow": 423,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 122,
      "a_to_b_moe_90": 216,
      "b_to_a": 299,
      "b_to_a_moe_90": 337,
      "gross_exchange": 421,
      "directional_balance": 177,
      "dominant_direction": "Rhode Island to Ohio",
      "main_flow": 299,
      "reverse_flow": 122,
      "reverse_share_of_main": 0.408
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 417,
      "a_to_b_moe_90": 454,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 417,
      "directional_balance": 417,
      "dominant_direction": "New Mexico to South Carolina",
      "main_flow": 417,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 416,
      "b_to_a_moe_90": 639,
      "gross_exchange": 416,
      "directional_balance": 416,
      "dominant_direction": "South Dakota to New Hampshire",
      "main_flow": 416,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Illinois",
      "state_a_fips": "17",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 6,
      "a_to_b_moe_90": 24,
      "b_to_a": 406,
      "b_to_a_moe_90": 572,
      "gross_exchange": 412,
      "directional_balance": 400,
      "dominant_direction": "Montana to Illinois",
      "main_flow": 406,
      "reverse_flow": 6,
      "reverse_share_of_main": 0.0148
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 164,
      "a_to_b_moe_90": 192,
      "b_to_a": 247,
      "b_to_a_moe_90": 326,
      "gross_exchange": 411,
      "directional_balance": 83,
      "dominant_direction": "Vermont to Arizona",
      "main_flow": 247,
      "reverse_flow": 164,
      "reverse_share_of_main": 0.664
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 274,
      "a_to_b_moe_90": 315,
      "b_to_a": 136,
      "b_to_a_moe_90": 244,
      "gross_exchange": 410,
      "directional_balance": 138,
      "dominant_direction": "Idaho to Oklahoma",
      "main_flow": 274,
      "reverse_flow": 136,
      "reverse_share_of_main": 0.4964
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 401,
      "a_to_b_moe_90": 673,
      "b_to_a": 8,
      "b_to_a_moe_90": 34,
      "gross_exchange": 409,
      "directional_balance": 393,
      "dominant_direction": "Delaware to New Hampshire",
      "main_flow": 401,
      "reverse_flow": 8,
      "reverse_share_of_main": 0.02
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 120,
      "a_to_b_moe_90": 208,
      "b_to_a": 289,
      "b_to_a_moe_90": 485,
      "gross_exchange": 409,
      "directional_balance": 169,
      "dominant_direction": "Pennsylvania to North Dakota",
      "main_flow": 289,
      "reverse_flow": 120,
      "reverse_share_of_main": 0.4152
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 97,
      "a_to_b_moe_90": 146,
      "b_to_a": 308,
      "b_to_a_moe_90": 279,
      "gross_exchange": 405,
      "directional_balance": 211,
      "dominant_direction": "Michigan to Delaware",
      "main_flow": 308,
      "reverse_flow": 97,
      "reverse_share_of_main": 0.3149
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 401,
      "a_to_b_moe_90": 695,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 401,
      "directional_balance": 401,
      "dominant_direction": "Louisiana to New Hampshire",
      "main_flow": 401,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "District of Columbia",
      "state_b_fips": "11",
      "a_to_b": 400,
      "a_to_b_moe_90": 575,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 400,
      "directional_balance": 400,
      "dominant_direction": "Alaska to District of Columbia",
      "main_flow": 400,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 77,
      "a_to_b_moe_90": 103,
      "b_to_a": 323,
      "b_to_a_moe_90": 474,
      "gross_exchange": 400,
      "directional_balance": 246,
      "dominant_direction": "Minnesota to Arkansas",
      "main_flow": 323,
      "reverse_flow": 77,
      "reverse_share_of_main": 0.2384
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 87,
      "a_to_b_moe_90": 162,
      "b_to_a": 313,
      "b_to_a_moe_90": 525,
      "gross_exchange": 400,
      "directional_balance": 226,
      "dominant_direction": "Rhode Island to Hawaii",
      "main_flow": 313,
      "reverse_flow": 87,
      "reverse_share_of_main": 0.278
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 395,
      "b_to_a_moe_90": 415,
      "gross_exchange": 395,
      "directional_balance": 395,
      "dominant_direction": "South Dakota to Maryland",
      "main_flow": 395,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 71,
      "a_to_b_moe_90": 89,
      "b_to_a": 324,
      "b_to_a_moe_90": 383,
      "gross_exchange": 395,
      "directional_balance": 253,
      "dominant_direction": "Kansas to Connecticut",
      "main_flow": 324,
      "reverse_flow": 71,
      "reverse_share_of_main": 0.2191
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 88,
      "a_to_b_moe_90": 147,
      "b_to_a": 307,
      "b_to_a_moe_90": 213,
      "gross_exchange": 395,
      "directional_balance": 219,
      "dominant_direction": "Nevada to Kentucky",
      "main_flow": 307,
      "reverse_flow": 88,
      "reverse_share_of_main": 0.2866
    },
    {
      "state_a": "Virginia",
      "state_a_fips": "51",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 392,
      "b_to_a_moe_90": 472,
      "gross_exchange": 392,
      "directional_balance": 392,
      "dominant_direction": "Wyoming to Virginia",
      "main_flow": 392,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 389,
      "b_to_a_moe_90": 412,
      "gross_exchange": 389,
      "directional_balance": 389,
      "dominant_direction": "North Dakota to New York",
      "main_flow": 389,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 315,
      "a_to_b_moe_90": 369,
      "b_to_a": 74,
      "b_to_a_moe_90": 130,
      "gross_exchange": 389,
      "directional_balance": 241,
      "dominant_direction": "Michigan to Wyoming",
      "main_flow": 315,
      "reverse_flow": 74,
      "reverse_share_of_main": 0.2349
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 388,
      "b_to_a_moe_90": 584,
      "gross_exchange": 388,
      "directional_balance": 388,
      "dominant_direction": "Washington to Maine",
      "main_flow": 388,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 387,
      "a_to_b_moe_90": 623,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 387,
      "directional_balance": 387,
      "dominant_direction": "Mississippi to New Mexico",
      "main_flow": 387,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 385,
      "b_to_a_moe_90": 456,
      "gross_exchange": 385,
      "directional_balance": 385,
      "dominant_direction": "Kentucky to Connecticut",
      "main_flow": 385,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 140,
      "a_to_b_moe_90": 164,
      "b_to_a": 245,
      "b_to_a_moe_90": 364,
      "gross_exchange": 385,
      "directional_balance": 105,
      "dominant_direction": "Nevada to Mississippi",
      "main_flow": 245,
      "reverse_flow": 140,
      "reverse_share_of_main": 0.5714
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 169,
      "a_to_b_moe_90": 203,
      "b_to_a": 216,
      "b_to_a_moe_90": 245,
      "gross_exchange": 385,
      "directional_balance": 47,
      "dominant_direction": "South Carolina to Rhode Island",
      "main_flow": 216,
      "reverse_flow": 169,
      "reverse_share_of_main": 0.7824
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Illinois",
      "state_b_fips": "17",
      "a_to_b": 383,
      "a_to_b_moe_90": 468,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 383,
      "directional_balance": 383,
      "dominant_direction": "Alaska to Illinois",
      "main_flow": 383,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 381,
      "b_to_a_moe_90": 413,
      "gross_exchange": 381,
      "directional_balance": 381,
      "dominant_direction": "Minnesota to Hawaii",
      "main_flow": 381,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 381,
      "a_to_b_moe_90": 364,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 381,
      "directional_balance": 381,
      "dominant_direction": "Hawaii to Louisiana",
      "main_flow": 381,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maryland",
      "state_a_fips": "24",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 293,
      "a_to_b_moe_90": 280,
      "b_to_a": 87,
      "b_to_a_moe_90": 148,
      "gross_exchange": 380,
      "directional_balance": 206,
      "dominant_direction": "Maryland to Montana",
      "main_flow": 293,
      "reverse_flow": 87,
      "reverse_share_of_main": 0.2969
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 346,
      "a_to_b_moe_90": 388,
      "b_to_a": 28,
      "b_to_a_moe_90": 51,
      "gross_exchange": 374,
      "directional_balance": 318,
      "dominant_direction": "Indiana to Nebraska",
      "main_flow": 346,
      "reverse_flow": 28,
      "reverse_share_of_main": 0.0809
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 373,
      "b_to_a_moe_90": 448,
      "gross_exchange": 373,
      "directional_balance": 373,
      "dominant_direction": "North Dakota to Massachusetts",
      "main_flow": 373,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 217,
      "a_to_b_moe_90": 361,
      "b_to_a": 154,
      "b_to_a_moe_90": 255,
      "gross_exchange": 371,
      "directional_balance": 63,
      "dominant_direction": "Connecticut to Hawaii",
      "main_flow": 217,
      "reverse_flow": 154,
      "reverse_share_of_main": 0.7097
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 247,
      "a_to_b_moe_90": 338,
      "b_to_a": 123,
      "b_to_a_moe_90": 222,
      "gross_exchange": 370,
      "directional_balance": 124,
      "dominant_direction": "Mississippi to Utah",
      "main_flow": 247,
      "reverse_flow": 123,
      "reverse_share_of_main": 0.498
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 239,
      "a_to_b_moe_90": 294,
      "b_to_a": 126,
      "b_to_a_moe_90": 216,
      "gross_exchange": 365,
      "directional_balance": 113,
      "dominant_direction": "Delaware to Massachusetts",
      "main_flow": 239,
      "reverse_flow": 126,
      "reverse_share_of_main": 0.5272
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 91,
      "a_to_b_moe_90": 137,
      "b_to_a": 270,
      "b_to_a_moe_90": 362,
      "gross_exchange": 361,
      "directional_balance": 179,
      "dominant_direction": "New Jersey to Minnesota",
      "main_flow": 270,
      "reverse_flow": 91,
      "reverse_share_of_main": 0.337
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 360,
      "a_to_b_moe_90": 45,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 360,
      "directional_balance": 360,
      "dominant_direction": "District of Columbia to West Virginia",
      "main_flow": 360,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 356,
      "b_to_a_moe_90": 412,
      "gross_exchange": 356,
      "directional_balance": 356,
      "dominant_direction": "Wyoming to Mississippi",
      "main_flow": 356,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 351,
      "b_to_a_moe_90": 604,
      "gross_exchange": 351,
      "directional_balance": 351,
      "dominant_direction": "Indiana to Delaware",
      "main_flow": 351,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Montana",
      "state_a_fips": "30",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 351,
      "b_to_a_moe_90": 317,
      "gross_exchange": 351,
      "directional_balance": 351,
      "dominant_direction": "Vermont to Montana",
      "main_flow": 351,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 350,
      "a_to_b_moe_90": 533,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 350,
      "directional_balance": 350,
      "dominant_direction": "Alaska to North Dakota",
      "main_flow": 350,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 271,
      "a_to_b_moe_90": 423,
      "b_to_a": 79,
      "b_to_a_moe_90": 136,
      "gross_exchange": 350,
      "directional_balance": 192,
      "dominant_direction": "New Hampshire to West Virginia",
      "main_flow": 271,
      "reverse_flow": 79,
      "reverse_share_of_main": 0.2915
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Massachusetts",
      "state_b_fips": "25",
      "a_to_b": 176,
      "a_to_b_moe_90": 309,
      "b_to_a": 172,
      "b_to_a_moe_90": 286,
      "gross_exchange": 348,
      "directional_balance": 4,
      "dominant_direction": "Idaho to Massachusetts",
      "main_flow": 176,
      "reverse_flow": 172,
      "reverse_share_of_main": 0.9773
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 346,
      "b_to_a_moe_90": 331,
      "gross_exchange": 346,
      "directional_balance": 346,
      "dominant_direction": "Montana to Alabama",
      "main_flow": 346,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 171,
      "a_to_b_moe_90": 247,
      "b_to_a": 175,
      "b_to_a_moe_90": 189,
      "gross_exchange": 346,
      "directional_balance": 4,
      "dominant_direction": "Virginia to New Hampshire",
      "main_flow": 175,
      "reverse_flow": 171,
      "reverse_share_of_main": 0.9771
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 344,
      "a_to_b_moe_90": 425,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 344,
      "directional_balance": 344,
      "dominant_direction": "Louisiana to Wisconsin",
      "main_flow": 344,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 172,
      "a_to_b_moe_90": 203,
      "b_to_a": 172,
      "b_to_a_moe_90": 262,
      "gross_exchange": 344,
      "directional_balance": 0,
      "dominant_direction": "Colorado to South Dakota",
      "main_flow": 172,
      "reverse_flow": 172,
      "reverse_share_of_main": 1.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 338,
      "a_to_b_moe_90": 532,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 338,
      "directional_balance": 338,
      "dominant_direction": "Alaska to Kentucky",
      "main_flow": 338,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 338,
      "b_to_a_moe_90": 332,
      "gross_exchange": 338,
      "directional_balance": 338,
      "dominant_direction": "South Carolina to Maine",
      "main_flow": 338,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 108,
      "a_to_b_moe_90": 178,
      "b_to_a": 229,
      "b_to_a_moe_90": 146,
      "gross_exchange": 337,
      "directional_balance": 121,
      "dominant_direction": "Utah to Kentucky",
      "main_flow": 229,
      "reverse_flow": 108,
      "reverse_share_of_main": 0.4716
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 318,
      "a_to_b_moe_90": 466,
      "b_to_a": 18,
      "b_to_a_moe_90": 36,
      "gross_exchange": 336,
      "directional_balance": 300,
      "dominant_direction": "Minnesota to Mississippi",
      "main_flow": 318,
      "reverse_flow": 18,
      "reverse_share_of_main": 0.0566
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 333,
      "a_to_b_moe_90": 310,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 333,
      "directional_balance": 333,
      "dominant_direction": "Ohio to Vermont",
      "main_flow": 333,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 331,
      "a_to_b_moe_90": 224,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 331,
      "directional_balance": 331,
      "dominant_direction": "Louisiana to Maine",
      "main_flow": 331,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 61,
      "a_to_b_moe_90": 100,
      "b_to_a": 270,
      "b_to_a_moe_90": 327,
      "gross_exchange": 331,
      "directional_balance": 209,
      "dominant_direction": "New Mexico to Hawaii",
      "main_flow": 270,
      "reverse_flow": 61,
      "reverse_share_of_main": 0.2259
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 329,
      "a_to_b_moe_90": 359,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 329,
      "directional_balance": 329,
      "dominant_direction": "Massachusetts to Mississippi",
      "main_flow": 329,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 109,
      "a_to_b_moe_90": 298,
      "b_to_a": 218,
      "b_to_a_moe_90": 278,
      "gross_exchange": 327,
      "directional_balance": 109,
      "dominant_direction": "Maine to Georgia",
      "main_flow": 218,
      "reverse_flow": 109,
      "reverse_share_of_main": 0.5
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 209,
      "a_to_b_moe_90": 354,
      "b_to_a": 118,
      "b_to_a_moe_90": 212,
      "gross_exchange": 327,
      "directional_balance": 91,
      "dominant_direction": "Delaware to Missouri",
      "main_flow": 209,
      "reverse_flow": 118,
      "reverse_share_of_main": 0.5646
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 264,
      "a_to_b_moe_90": 288,
      "b_to_a": 61,
      "b_to_a_moe_90": 92,
      "gross_exchange": 325,
      "directional_balance": 203,
      "dominant_direction": "New Mexico to Tennessee",
      "main_flow": 264,
      "reverse_flow": 61,
      "reverse_share_of_main": 0.2311
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 279,
      "a_to_b_moe_90": 491,
      "b_to_a": 45,
      "b_to_a_moe_90": 59,
      "gross_exchange": 324,
      "directional_balance": 234,
      "dominant_direction": "Oklahoma to West Virginia",
      "main_flow": 279,
      "reverse_flow": 45,
      "reverse_share_of_main": 0.1613
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 291,
      "a_to_b_moe_90": 329,
      "b_to_a": 31,
      "b_to_a_moe_90": 57,
      "gross_exchange": 322,
      "directional_balance": 260,
      "dominant_direction": "North Dakota to Wyoming",
      "main_flow": 291,
      "reverse_flow": 31,
      "reverse_share_of_main": 0.1065
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 315,
      "b_to_a_moe_90": 369,
      "gross_exchange": 315,
      "directional_balance": 315,
      "dominant_direction": "New Hampshire to Alabama",
      "main_flow": 315,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Pennsylvania",
      "state_b_fips": "42",
      "a_to_b": 257,
      "a_to_b_moe_90": 429,
      "b_to_a": 57,
      "b_to_a_moe_90": 101,
      "gross_exchange": 314,
      "directional_balance": 200,
      "dominant_direction": "Alaska to Pennsylvania",
      "main_flow": 257,
      "reverse_flow": 57,
      "reverse_share_of_main": 0.2218
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 85,
      "a_to_b_moe_90": 143,
      "b_to_a": 224,
      "b_to_a_moe_90": 425,
      "gross_exchange": 309,
      "directional_balance": 139,
      "dominant_direction": "New Jersey to Alaska",
      "main_flow": 224,
      "reverse_flow": 85,
      "reverse_share_of_main": 0.3795
    },
    {
      "state_a": "Colorado",
      "state_a_fips": "08",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 194,
      "a_to_b_moe_90": 235,
      "b_to_a": 112,
      "b_to_a_moe_90": 153,
      "gross_exchange": 306,
      "directional_balance": 82,
      "dominant_direction": "Colorado to Rhode Island",
      "main_flow": 194,
      "reverse_flow": 112,
      "reverse_share_of_main": 0.5773
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 281,
      "a_to_b_moe_90": 431,
      "b_to_a": 24,
      "b_to_a_moe_90": 57,
      "gross_exchange": 305,
      "directional_balance": 257,
      "dominant_direction": "New Hampshire to New Jersey",
      "main_flow": 281,
      "reverse_flow": 24,
      "reverse_share_of_main": 0.0854
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 168,
      "a_to_b_moe_90": 286,
      "b_to_a": 135,
      "b_to_a_moe_90": 125,
      "gross_exchange": 303,
      "directional_balance": 33,
      "dominant_direction": "Iowa to North Dakota",
      "main_flow": 168,
      "reverse_flow": 135,
      "reverse_share_of_main": 0.8036
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 302,
      "b_to_a_moe_90": 404,
      "gross_exchange": 302,
      "directional_balance": 302,
      "dominant_direction": "New Mexico to New Jersey",
      "main_flow": 302,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 80,
      "a_to_b_moe_90": 16,
      "b_to_a": 217,
      "b_to_a_moe_90": 310,
      "gross_exchange": 297,
      "directional_balance": 137,
      "dominant_direction": "West Virginia to Delaware",
      "main_flow": 217,
      "reverse_flow": 80,
      "reverse_share_of_main": 0.3687
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 124,
      "a_to_b_moe_90": 213,
      "b_to_a": 173,
      "b_to_a_moe_90": 299,
      "gross_exchange": 297,
      "directional_balance": 49,
      "dominant_direction": "North Dakota to New Mexico",
      "main_flow": 173,
      "reverse_flow": 124,
      "reverse_share_of_main": 0.7168
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 80,
      "a_to_b_moe_90": 138,
      "b_to_a": 215,
      "b_to_a_moe_90": 99,
      "gross_exchange": 295,
      "directional_balance": 135,
      "dominant_direction": "New Mexico to Kentucky",
      "main_flow": 215,
      "reverse_flow": 80,
      "reverse_share_of_main": 0.3721
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 294,
      "b_to_a_moe_90": 380,
      "gross_exchange": 294,
      "directional_balance": 294,
      "dominant_direction": "Utah to District of Columbia",
      "main_flow": 294,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 72,
      "a_to_b_moe_90": 131,
      "b_to_a": 210,
      "b_to_a_moe_90": 304,
      "gross_exchange": 282,
      "directional_balance": 138,
      "dominant_direction": "Kansas to Alaska",
      "main_flow": 210,
      "reverse_flow": 72,
      "reverse_share_of_main": 0.3429
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 248,
      "a_to_b_moe_90": 301,
      "b_to_a": 32,
      "b_to_a_moe_90": 74,
      "gross_exchange": 280,
      "directional_balance": 216,
      "dominant_direction": "Hawaii to South Dakota",
      "main_flow": 248,
      "reverse_flow": 32,
      "reverse_share_of_main": 0.129
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Kentucky",
      "state_b_fips": "21",
      "a_to_b": 46,
      "a_to_b_moe_90": 86,
      "b_to_a": 232,
      "b_to_a_moe_90": 369,
      "gross_exchange": 278,
      "directional_balance": 186,
      "dominant_direction": "Kentucky to District of Columbia",
      "main_flow": 232,
      "reverse_flow": 46,
      "reverse_share_of_main": 0.1983
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 159,
      "a_to_b_moe_90": 276,
      "b_to_a": 113,
      "b_to_a_moe_90": 192,
      "gross_exchange": 272,
      "directional_balance": 46,
      "dominant_direction": "Kansas to Maine",
      "main_flow": 159,
      "reverse_flow": 113,
      "reverse_share_of_main": 0.7107
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 271,
      "a_to_b_moe_90": 503,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 271,
      "directional_balance": 271,
      "dominant_direction": "Connecticut to New Mexico",
      "main_flow": 271,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "South Carolina",
      "state_a_fips": "45",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 63,
      "a_to_b_moe_90": 112,
      "b_to_a": 200,
      "b_to_a_moe_90": 235,
      "gross_exchange": 263,
      "directional_balance": 137,
      "dominant_direction": "Vermont to South Carolina",
      "main_flow": 200,
      "reverse_flow": 63,
      "reverse_share_of_main": 0.315
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 199,
      "a_to_b_moe_90": 190,
      "b_to_a": 62,
      "b_to_a_moe_90": 125,
      "gross_exchange": 261,
      "directional_balance": 137,
      "dominant_direction": "Missouri to West Virginia",
      "main_flow": 199,
      "reverse_flow": 62,
      "reverse_share_of_main": 0.3116
    },
    {
      "state_a": "Pennsylvania",
      "state_a_fips": "42",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 121,
      "a_to_b_moe_90": 184,
      "b_to_a": 140,
      "b_to_a_moe_90": 198,
      "gross_exchange": 261,
      "directional_balance": 19,
      "dominant_direction": "South Dakota to Pennsylvania",
      "main_flow": 140,
      "reverse_flow": 121,
      "reverse_share_of_main": 0.8643
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 68,
      "a_to_b_moe_90": 116,
      "b_to_a": 191,
      "b_to_a_moe_90": 354,
      "gross_exchange": 259,
      "directional_balance": 123,
      "dominant_direction": "Oregon to North Dakota",
      "main_flow": 191,
      "reverse_flow": 68,
      "reverse_share_of_main": 0.356
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 43,
      "a_to_b_moe_90": 73,
      "b_to_a": 214,
      "b_to_a_moe_90": 333,
      "gross_exchange": 257,
      "directional_balance": 171,
      "dominant_direction": "Indiana to District of Columbia",
      "main_flow": 214,
      "reverse_flow": 43,
      "reverse_share_of_main": 0.2009
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 253,
      "b_to_a_moe_90": 332,
      "gross_exchange": 253,
      "directional_balance": 253,
      "dominant_direction": "Mississippi to Hawaii",
      "main_flow": 253,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 251,
      "b_to_a_moe_90": 255,
      "gross_exchange": 251,
      "directional_balance": 251,
      "dominant_direction": "Wyoming to Kentucky",
      "main_flow": 251,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 141,
      "a_to_b_moe_90": 219,
      "b_to_a": 110,
      "b_to_a_moe_90": 156,
      "gross_exchange": 251,
      "directional_balance": 31,
      "dominant_direction": "Delaware to Maine",
      "main_flow": 141,
      "reverse_flow": 110,
      "reverse_share_of_main": 0.7801
    },
    {
      "state_a": "Ohio",
      "state_a_fips": "39",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 137,
      "a_to_b_moe_90": 239,
      "b_to_a": 114,
      "b_to_a_moe_90": 217,
      "gross_exchange": 251,
      "directional_balance": 23,
      "dominant_direction": "Ohio to Wyoming",
      "main_flow": 137,
      "reverse_flow": 114,
      "reverse_share_of_main": 0.8321
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Oregon",
      "state_b_fips": "41",
      "a_to_b": 142,
      "a_to_b_moe_90": 179,
      "b_to_a": 108,
      "b_to_a_moe_90": 108,
      "gross_exchange": 250,
      "directional_balance": 34,
      "dominant_direction": "Louisiana to Oregon",
      "main_flow": 142,
      "reverse_flow": 108,
      "reverse_share_of_main": 0.7606
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 247,
      "b_to_a_moe_90": 333,
      "gross_exchange": 247,
      "directional_balance": 247,
      "dominant_direction": "Maryland to Arkansas",
      "main_flow": 247,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 244,
      "b_to_a_moe_90": 389,
      "gross_exchange": 244,
      "directional_balance": 244,
      "dominant_direction": "South Dakota to Alaska",
      "main_flow": 244,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 242,
      "b_to_a_moe_90": 39,
      "gross_exchange": 242,
      "directional_balance": 242,
      "dominant_direction": "Vermont to Minnesota",
      "main_flow": 242,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 241,
      "b_to_a_moe_90": 309,
      "gross_exchange": 241,
      "directional_balance": 241,
      "dominant_direction": "Kansas to Idaho",
      "main_flow": 241,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 238,
      "b_to_a_moe_90": 205,
      "gross_exchange": 238,
      "directional_balance": 238,
      "dominant_direction": "Montana to Maine",
      "main_flow": 238,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 232,
      "a_to_b_moe_90": 374,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 232,
      "directional_balance": 232,
      "dominant_direction": "Indiana to Rhode Island",
      "main_flow": 232,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 110,
      "a_to_b_moe_90": 140,
      "b_to_a": 121,
      "b_to_a_moe_90": 197,
      "gross_exchange": 231,
      "directional_balance": 11,
      "dominant_direction": "Tennessee to Rhode Island",
      "main_flow": 121,
      "reverse_flow": 110,
      "reverse_share_of_main": 0.9091
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 200,
      "a_to_b_moe_90": 279,
      "b_to_a": 27,
      "b_to_a_moe_90": 48,
      "gross_exchange": 227,
      "directional_balance": 173,
      "dominant_direction": "New Jersey to Oklahoma",
      "main_flow": 200,
      "reverse_flow": 27,
      "reverse_share_of_main": 0.135
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 174,
      "a_to_b_moe_90": 227,
      "b_to_a": 51,
      "b_to_a_moe_90": 91,
      "gross_exchange": 225,
      "directional_balance": 123,
      "dominant_direction": "Connecticut to Louisiana",
      "main_flow": 174,
      "reverse_flow": 51,
      "reverse_share_of_main": 0.2931
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Michigan",
      "state_b_fips": "26",
      "a_to_b": 224,
      "a_to_b_moe_90": 298,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 224,
      "directional_balance": 224,
      "dominant_direction": "Maine to Michigan",
      "main_flow": 224,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 223,
      "b_to_a_moe_90": 284,
      "gross_exchange": 223,
      "directional_balance": 223,
      "dominant_direction": "New Mexico to Maine",
      "main_flow": 223,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 220,
      "b_to_a_moe_90": 280,
      "gross_exchange": 220,
      "directional_balance": 220,
      "dominant_direction": "Wisconsin to New Hampshire",
      "main_flow": 220,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 216,
      "b_to_a_moe_90": 347,
      "gross_exchange": 216,
      "directional_balance": 216,
      "dominant_direction": "Nebraska to Idaho",
      "main_flow": 216,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 216,
      "b_to_a_moe_90": 306,
      "gross_exchange": 216,
      "directional_balance": 216,
      "dominant_direction": "Nebraska to Maine",
      "main_flow": 216,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 214,
      "a_to_b_moe_90": 342,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 214,
      "directional_balance": 214,
      "dominant_direction": "Arkansas to New Hampshire",
      "main_flow": 214,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Vermont",
      "state_a_fips": "50",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 187,
      "a_to_b_moe_90": 212,
      "b_to_a": 25,
      "b_to_a_moe_90": 49,
      "gross_exchange": 212,
      "directional_balance": 162,
      "dominant_direction": "Vermont to Virginia",
      "main_flow": 187,
      "reverse_flow": 25,
      "reverse_share_of_main": 0.1337
    },
    {
      "state_a": "Washington",
      "state_a_fips": "53",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 208,
      "a_to_b_moe_90": 228,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 208,
      "directional_balance": 208,
      "dominant_direction": "Washington to West Virginia",
      "main_flow": 208,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kentucky",
      "state_a_fips": "21",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 206,
      "b_to_a_moe_90": 314,
      "gross_exchange": 206,
      "directional_balance": 206,
      "dominant_direction": "Vermont to Kentucky",
      "main_flow": 206,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 205,
      "a_to_b_moe_90": 245,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 205,
      "directional_balance": 205,
      "dominant_direction": "Indiana to Mississippi",
      "main_flow": 205,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 199,
      "b_to_a_moe_90": 250,
      "gross_exchange": 199,
      "directional_balance": 199,
      "dominant_direction": "Vermont to Mississippi",
      "main_flow": 199,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 185,
      "b_to_a_moe_90": 229,
      "gross_exchange": 185,
      "directional_balance": 185,
      "dominant_direction": "Mississippi to Iowa",
      "main_flow": 185,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Wisconsin",
      "state_a_fips": "55",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 78,
      "a_to_b_moe_90": 26,
      "b_to_a": 103,
      "b_to_a_moe_90": 168,
      "gross_exchange": 181,
      "directional_balance": 25,
      "dominant_direction": "Wyoming to Wisconsin",
      "main_flow": 103,
      "reverse_flow": 78,
      "reverse_share_of_main": 0.7573
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 177,
      "a_to_b_moe_90": 402,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 177,
      "directional_balance": 177,
      "dominant_direction": "Alabama to Vermont",
      "main_flow": 177,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New York",
      "state_a_fips": "36",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 173,
      "a_to_b_moe_90": 303,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 173,
      "directional_balance": 173,
      "dominant_direction": "New York to Wyoming",
      "main_flow": 173,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Minnesota",
      "state_b_fips": "27",
      "a_to_b": 95,
      "a_to_b_moe_90": 185,
      "b_to_a": 77,
      "b_to_a_moe_90": 174,
      "gross_exchange": 172,
      "directional_balance": 18,
      "dominant_direction": "Louisiana to Minnesota",
      "main_flow": 95,
      "reverse_flow": 77,
      "reverse_share_of_main": 0.8105
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 114,
      "a_to_b_moe_90": 19,
      "b_to_a": 51,
      "b_to_a_moe_90": 70,
      "gross_exchange": 165,
      "directional_balance": 63,
      "dominant_direction": "Iowa to Montana",
      "main_flow": 114,
      "reverse_flow": 51,
      "reverse_share_of_main": 0.4474
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 164,
      "b_to_a_moe_90": 287,
      "gross_exchange": 164,
      "directional_balance": 164,
      "dominant_direction": "Mississippi to District of Columbia",
      "main_flow": 164,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Indiana",
      "state_b_fips": "18",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 160,
      "b_to_a_moe_90": 167,
      "gross_exchange": 160,
      "directional_balance": 160,
      "dominant_direction": "Indiana to Alaska",
      "main_flow": 160,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 159,
      "a_to_b_moe_90": 353,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 159,
      "directional_balance": 159,
      "dominant_direction": "Arkansas to Vermont",
      "main_flow": 159,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 158,
      "b_to_a_moe_90": 205,
      "gross_exchange": 158,
      "directional_balance": 158,
      "dominant_direction": "North Dakota to District of Columbia",
      "main_flow": 158,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 157,
      "b_to_a_moe_90": 262,
      "gross_exchange": 157,
      "directional_balance": 157,
      "dominant_direction": "Rhode Island to Mississippi",
      "main_flow": 157,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 41,
      "a_to_b_moe_90": 58,
      "b_to_a": 116,
      "b_to_a_moe_90": 196,
      "gross_exchange": 157,
      "directional_balance": 75,
      "dominant_direction": "Nebraska to Hawaii",
      "main_flow": 116,
      "reverse_flow": 41,
      "reverse_share_of_main": 0.3534
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 156,
      "b_to_a_moe_90": 255,
      "gross_exchange": 156,
      "directional_balance": 156,
      "dominant_direction": "Iowa to Hawaii",
      "main_flow": 156,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Hawaii",
      "state_a_fips": "15",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 152,
      "a_to_b_moe_90": 273,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 152,
      "directional_balance": 152,
      "dominant_direction": "Hawaii to Wyoming",
      "main_flow": 152,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Minnesota",
      "state_a_fips": "27",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 150,
      "a_to_b_moe_90": 196,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 150,
      "directional_balance": 150,
      "dominant_direction": "Minnesota to New Hampshire",
      "main_flow": 150,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 148,
      "a_to_b_moe_90": 255,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 148,
      "directional_balance": 148,
      "dominant_direction": "Michigan to New Hampshire",
      "main_flow": 148,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Kansas",
      "state_b_fips": "20",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 147,
      "b_to_a_moe_90": 242,
      "gross_exchange": 147,
      "directional_balance": 147,
      "dominant_direction": "Kansas to District of Columbia",
      "main_flow": 147,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 147,
      "b_to_a_moe_90": 228,
      "gross_exchange": 147,
      "directional_balance": 147,
      "dominant_direction": "South Dakota to Louisiana",
      "main_flow": 147,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 145,
      "a_to_b_moe_90": 291,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 145,
      "directional_balance": 145,
      "dominant_direction": "Arkansas to South Dakota",
      "main_flow": 145,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 141,
      "b_to_a_moe_90": 222,
      "gross_exchange": 141,
      "directional_balance": 141,
      "dominant_direction": "Utah to Rhode Island",
      "main_flow": 141,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Iowa",
      "state_a_fips": "19",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 139,
      "b_to_a_moe_90": 255,
      "gross_exchange": 139,
      "directional_balance": 139,
      "dominant_direction": "West Virginia to Iowa",
      "main_flow": 139,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 121,
      "a_to_b_moe_90": 52,
      "b_to_a": 17,
      "b_to_a_moe_90": 39,
      "gross_exchange": 138,
      "directional_balance": 104,
      "dominant_direction": "Georgia to Wyoming",
      "main_flow": 121,
      "reverse_flow": 17,
      "reverse_share_of_main": 0.1405
    },
    {
      "state_a": "Georgia",
      "state_a_fips": "13",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 131,
      "b_to_a_moe_90": 222,
      "gross_exchange": 131,
      "directional_balance": 131,
      "dominant_direction": "South Dakota to Georgia",
      "main_flow": 131,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "South Dakota",
      "state_a_fips": "46",
      "state_b": "Tennessee",
      "state_b_fips": "47",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 129,
      "b_to_a_moe_90": 180,
      "gross_exchange": 129,
      "directional_balance": 129,
      "dominant_direction": "Tennessee to South Dakota",
      "main_flow": 129,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "New Jersey",
      "state_b_fips": "34",
      "a_to_b": 42,
      "a_to_b_moe_90": 71,
      "b_to_a": 86,
      "b_to_a_moe_90": 248,
      "gross_exchange": 128,
      "directional_balance": 44,
      "dominant_direction": "New Jersey to Louisiana",
      "main_flow": 86,
      "reverse_flow": 42,
      "reverse_share_of_main": 0.4884
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 124,
      "b_to_a_moe_90": 234,
      "gross_exchange": 124,
      "directional_balance": 124,
      "dominant_direction": "Vermont to Alaska",
      "main_flow": 124,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 124,
      "b_to_a_moe_90": 175,
      "gross_exchange": 124,
      "directional_balance": 124,
      "dominant_direction": "Wisconsin to Maine",
      "main_flow": 124,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "South Carolina",
      "state_b_fips": "45",
      "a_to_b": 11,
      "a_to_b_moe_90": 21,
      "b_to_a": 113,
      "b_to_a_moe_90": 146,
      "gross_exchange": 124,
      "directional_balance": 102,
      "dominant_direction": "South Carolina to District of Columbia",
      "main_flow": 113,
      "reverse_flow": 11,
      "reverse_share_of_main": 0.0973
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Connecticut",
      "state_b_fips": "09",
      "a_to_b": 121,
      "a_to_b_moe_90": 185,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 121,
      "directional_balance": 121,
      "dominant_direction": "Alaska to Connecticut",
      "main_flow": 121,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 115,
      "b_to_a_moe_90": 107,
      "gross_exchange": 115,
      "directional_balance": 115,
      "dominant_direction": "Rhode Island to Louisiana",
      "main_flow": 115,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 113,
      "a_to_b_moe_90": 9,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 113,
      "directional_balance": 113,
      "dominant_direction": "Massachusetts to West Virginia",
      "main_flow": 113,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 112,
      "a_to_b_moe_90": 169,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 112,
      "directional_balance": 112,
      "dominant_direction": "Maine to Wyoming",
      "main_flow": 112,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 109,
      "a_to_b_moe_90": 179,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 109,
      "directional_balance": 109,
      "dominant_direction": "Missouri to Vermont",
      "main_flow": 109,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 106,
      "a_to_b_moe_90": 194,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 106,
      "directional_balance": 106,
      "dominant_direction": "Delaware to South Dakota",
      "main_flow": 106,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "Nevada",
      "state_b_fips": "32",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 104,
      "b_to_a_moe_90": 110,
      "gross_exchange": 104,
      "directional_balance": 104,
      "dominant_direction": "Nevada to Maine",
      "main_flow": 104,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Oklahoma",
      "state_b_fips": "40",
      "a_to_b": 103,
      "a_to_b_moe_90": 160,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 103,
      "directional_balance": 103,
      "dominant_direction": "New Hampshire to Oklahoma",
      "main_flow": 103,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Iowa",
      "state_b_fips": "19",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 102,
      "b_to_a_moe_90": 130,
      "gross_exchange": 102,
      "directional_balance": 102,
      "dominant_direction": "Iowa to District of Columbia",
      "main_flow": 102,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Oregon",
      "state_a_fips": "41",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 86,
      "a_to_b_moe_90": 154,
      "b_to_a": 16,
      "b_to_a_moe_90": 26,
      "gross_exchange": 102,
      "directional_balance": 70,
      "dominant_direction": "Oregon to Vermont",
      "main_flow": 86,
      "reverse_flow": 16,
      "reverse_share_of_main": 0.186
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Maine",
      "state_b_fips": "23",
      "a_to_b": 94,
      "a_to_b_moe_90": 172,
      "b_to_a": 6,
      "b_to_a_moe_90": 17,
      "gross_exchange": 100,
      "directional_balance": 88,
      "dominant_direction": "Arkansas to Maine",
      "main_flow": 94,
      "reverse_flow": 6,
      "reverse_share_of_main": 0.0638
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 99,
      "b_to_a_moe_90": 165,
      "gross_exchange": 99,
      "directional_balance": 99,
      "dominant_direction": "Rhode Island to Nebraska",
      "main_flow": 99,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Washington",
      "state_b_fips": "53",
      "a_to_b": 21,
      "a_to_b_moe_90": 38,
      "b_to_a": 76,
      "b_to_a_moe_90": 96,
      "gross_exchange": 97,
      "directional_balance": 55,
      "dominant_direction": "Washington to North Dakota",
      "main_flow": 76,
      "reverse_flow": 21,
      "reverse_share_of_main": 0.2763
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 95,
      "a_to_b_moe_90": 178,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 95,
      "directional_balance": 95,
      "dominant_direction": "Maine to South Dakota",
      "main_flow": 95,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Utah",
      "state_b_fips": "49",
      "a_to_b": 94,
      "a_to_b_moe_90": 167,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 94,
      "directional_balance": 94,
      "dominant_direction": "Delaware to Utah",
      "main_flow": 94,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 92,
      "a_to_b_moe_90": 121,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 92,
      "directional_balance": 92,
      "dominant_direction": "District of Columbia to Vermont",
      "main_flow": 92,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arizona",
      "state_a_fips": "04",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 91,
      "a_to_b_moe_90": 154,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 91,
      "directional_balance": 91,
      "dominant_direction": "Arizona to Rhode Island",
      "main_flow": 91,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Hawaii",
      "state_b_fips": "15",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 87,
      "b_to_a_moe_90": 150,
      "gross_exchange": 87,
      "directional_balance": 87,
      "dominant_direction": "Hawaii to District of Columbia",
      "main_flow": 87,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 85,
      "b_to_a_moe_90": 103,
      "gross_exchange": 85,
      "directional_balance": 85,
      "dominant_direction": "Wisconsin to Mississippi",
      "main_flow": 85,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 82,
      "b_to_a_moe_90": 141,
      "gross_exchange": 82,
      "directional_balance": 82,
      "dominant_direction": "Vermont to Louisiana",
      "main_flow": 82,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 78,
      "a_to_b_moe_90": 161,
      "b_to_a": 2,
      "b_to_a_moe_90": 20,
      "gross_exchange": 80,
      "directional_balance": 76,
      "dominant_direction": "Louisiana to Nebraska",
      "main_flow": 78,
      "reverse_flow": 2,
      "reverse_share_of_main": 0.0256
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 79,
      "b_to_a_moe_90": 128,
      "gross_exchange": 79,
      "directional_balance": 79,
      "dominant_direction": "Montana to District of Columbia",
      "main_flow": 79,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Rhode Island",
      "state_a_fips": "44",
      "state_b": "South Dakota",
      "state_b_fips": "46",
      "a_to_b": 77,
      "a_to_b_moe_90": 18,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 77,
      "directional_balance": 77,
      "dominant_direction": "Rhode Island to South Dakota",
      "main_flow": 77,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Nebraska",
      "state_a_fips": "31",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 77,
      "a_to_b_moe_90": 141,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 77,
      "directional_balance": 77,
      "dominant_direction": "Nebraska to West Virginia",
      "main_flow": 77,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Wisconsin",
      "state_b_fips": "55",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 75,
      "b_to_a_moe_90": 126,
      "gross_exchange": 75,
      "directional_balance": 75,
      "dominant_direction": "Wisconsin to Delaware",
      "main_flow": 75,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Maine",
      "state_a_fips": "23",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 73,
      "a_to_b_moe_90": 123,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 73,
      "directional_balance": 73,
      "dominant_direction": "Maine to West Virginia",
      "main_flow": 73,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 66,
      "a_to_b_moe_90": 135,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 66,
      "directional_balance": 66,
      "dominant_direction": "Delaware to Wyoming",
      "main_flow": 66,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Louisiana",
      "state_b_fips": "22",
      "a_to_b": 17,
      "a_to_b_moe_90": 33,
      "b_to_a": 49,
      "b_to_a_moe_90": 87,
      "gross_exchange": 66,
      "directional_balance": 32,
      "dominant_direction": "Louisiana to Delaware",
      "main_flow": 49,
      "reverse_flow": 17,
      "reverse_share_of_main": 0.3469
    },
    {
      "state_a": "District of Columbia",
      "state_a_fips": "11",
      "state_b": "Missouri",
      "state_b_fips": "29",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 65,
      "b_to_a_moe_90": 113,
      "gross_exchange": 65,
      "directional_balance": 65,
      "dominant_direction": "Missouri to District of Columbia",
      "main_flow": 65,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 62,
      "b_to_a_moe_90": 118,
      "gross_exchange": 62,
      "directional_balance": 62,
      "dominant_direction": "Mississippi to Connecticut",
      "main_flow": 62,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 59,
      "b_to_a_moe_90": 106,
      "gross_exchange": 59,
      "directional_balance": 59,
      "dominant_direction": "Montana to Mississippi",
      "main_flow": 59,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alabama",
      "state_a_fips": "01",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 58,
      "b_to_a_moe_90": 121,
      "gross_exchange": 58,
      "directional_balance": 58,
      "dominant_direction": "West Virginia to Alabama",
      "main_flow": 58,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "New Mexico",
      "state_b_fips": "35",
      "a_to_b": 58,
      "a_to_b_moe_90": 110,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 58,
      "directional_balance": 58,
      "dominant_direction": "Delaware to New Mexico",
      "main_flow": 58,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "Maryland",
      "state_b_fips": "24",
      "a_to_b": 57,
      "a_to_b_moe_90": 96,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 57,
      "directional_balance": 57,
      "dominant_direction": "Alaska to Maryland",
      "main_flow": 57,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 56,
      "b_to_a_moe_90": 82,
      "gross_exchange": 56,
      "directional_balance": 56,
      "dominant_direction": "North Dakota to Arkansas",
      "main_flow": 56,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "North Dakota",
      "state_a_fips": "38",
      "state_b": "Virginia",
      "state_b_fips": "51",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 56,
      "b_to_a_moe_90": 119,
      "gross_exchange": 56,
      "directional_balance": 56,
      "dominant_direction": "Virginia to North Dakota",
      "main_flow": 56,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Michigan",
      "state_a_fips": "26",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 55,
      "b_to_a_moe_90": 100,
      "gross_exchange": 55,
      "directional_balance": 55,
      "dominant_direction": "North Dakota to Michigan",
      "main_flow": 55,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Vermont",
      "state_b_fips": "50",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 46,
      "b_to_a_moe_90": 80,
      "gross_exchange": 46,
      "directional_balance": 46,
      "dominant_direction": "Vermont to Delaware",
      "main_flow": 46,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 46,
      "a_to_b_moe_90": 113,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 46,
      "directional_balance": 46,
      "dominant_direction": "Oklahoma to Rhode Island",
      "main_flow": 46,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 44,
      "b_to_a_moe_90": 78,
      "gross_exchange": 44,
      "directional_balance": 44,
      "dominant_direction": "New Hampshire to Missouri",
      "main_flow": 44,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Nevada",
      "state_a_fips": "32",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 43,
      "a_to_b_moe_90": 74,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 43,
      "directional_balance": 43,
      "dominant_direction": "Nevada to West Virginia",
      "main_flow": 43,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 42,
      "b_to_a_moe_90": 50,
      "gross_exchange": 42,
      "directional_balance": 42,
      "dominant_direction": "West Virginia to Louisiana",
      "main_flow": 42,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Arkansas",
      "state_a_fips": "05",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 41,
      "b_to_a_moe_90": 78,
      "gross_exchange": 41,
      "directional_balance": 41,
      "dominant_direction": "Wyoming to Arkansas",
      "main_flow": 41,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Massachusetts",
      "state_a_fips": "25",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 41,
      "b_to_a_moe_90": 55,
      "gross_exchange": 41,
      "directional_balance": 41,
      "dominant_direction": "Nebraska to Massachusetts",
      "main_flow": 41,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Oklahoma",
      "state_a_fips": "40",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 41,
      "b_to_a_moe_90": 76,
      "gross_exchange": 41,
      "directional_balance": 41,
      "dominant_direction": "Wyoming to Oklahoma",
      "main_flow": 41,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 38,
      "b_to_a_moe_90": 63,
      "gross_exchange": 38,
      "directional_balance": 38,
      "dominant_direction": "North Dakota to Louisiana",
      "main_flow": 38,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Connecticut",
      "state_a_fips": "09",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 37,
      "b_to_a_moe_90": 64,
      "gross_exchange": 37,
      "directional_balance": 37,
      "dominant_direction": "Nebraska to Connecticut",
      "main_flow": 37,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Louisiana",
      "state_a_fips": "22",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 33,
      "a_to_b_moe_90": 63,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 33,
      "directional_balance": 33,
      "dominant_direction": "Louisiana to Wyoming",
      "main_flow": 33,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Alaska",
      "state_a_fips": "02",
      "state_b": "New Hampshire",
      "state_b_fips": "33",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 31,
      "b_to_a_moe_90": 42,
      "gross_exchange": 31,
      "directional_balance": 31,
      "dominant_direction": "New Hampshire to Alaska",
      "main_flow": 31,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Idaho",
      "state_a_fips": "16",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 31,
      "a_to_b_moe_90": 60,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 31,
      "directional_balance": 31,
      "dominant_direction": "Idaho to Rhode Island",
      "main_flow": 31,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Missouri",
      "state_a_fips": "29",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 30,
      "a_to_b_moe_90": 59,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 30,
      "directional_balance": 30,
      "dominant_direction": "Missouri to Rhode Island",
      "main_flow": 30,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Hampshire",
      "state_a_fips": "33",
      "state_b": "Wyoming",
      "state_b_fips": "56",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 25,
      "b_to_a_moe_90": 44,
      "gross_exchange": 25,
      "directional_balance": 25,
      "dominant_direction": "Wyoming to New Hampshire",
      "main_flow": 25,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Mississippi",
      "state_a_fips": "28",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 24,
      "a_to_b_moe_90": 18,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 24,
      "directional_balance": 24,
      "dominant_direction": "Mississippi to North Dakota",
      "main_flow": 24,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Nebraska",
      "state_b_fips": "31",
      "a_to_b": 21,
      "a_to_b_moe_90": 41,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 21,
      "directional_balance": 21,
      "dominant_direction": "Delaware to Nebraska",
      "main_flow": 21,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Indiana",
      "state_a_fips": "18",
      "state_b": "Montana",
      "state_b_fips": "30",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 18,
      "b_to_a_moe_90": 30,
      "gross_exchange": 18,
      "directional_balance": 18,
      "dominant_direction": "Montana to Indiana",
      "main_flow": 18,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Delaware",
      "state_a_fips": "10",
      "state_b": "Mississippi",
      "state_b_fips": "28",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 12,
      "b_to_a_moe_90": 22,
      "gross_exchange": 12,
      "directional_balance": 12,
      "dominant_direction": "Mississippi to Delaware",
      "main_flow": 12,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "Kansas",
      "state_a_fips": "20",
      "state_b": "West Virginia",
      "state_b_fips": "54",
      "a_to_b": 0,
      "a_to_b_moe_90": 0,
      "b_to_a": 12,
      "b_to_a_moe_90": 22,
      "gross_exchange": 12,
      "directional_balance": 12,
      "dominant_direction": "West Virginia to Kansas",
      "main_flow": 12,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Mexico",
      "state_a_fips": "35",
      "state_b": "Rhode Island",
      "state_b_fips": "44",
      "a_to_b": 8,
      "a_to_b_moe_90": 7,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 8,
      "directional_balance": 8,
      "dominant_direction": "New Mexico to Rhode Island",
      "main_flow": 8,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    },
    {
      "state_a": "New Jersey",
      "state_a_fips": "34",
      "state_b": "North Dakota",
      "state_b_fips": "38",
      "a_to_b": 2,
      "a_to_b_moe_90": 7,
      "b_to_a": 0,
      "b_to_a_moe_90": 0,
      "gross_exchange": 2,
      "directional_balance": 2,
      "dominant_direction": "New Jersey to North Dakota",
      "main_flow": 2,
      "reverse_flow": 0,
      "reverse_share_of_main": 0.0
    }
  ],
  "headline_metrics": {
    "largest_pair": "California and Texas",
    "largest_gross_exchange": 123001,
    "largest_main_flow": 77198,
    "largest_reverse_flow": 45803,
    "largest_directional_balance": 31395,
    "pairs_analyzed": 1186
  }
}
