{
  "Epoch": [
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms3/fpi/fast/l2/dis-momsaux/2015/09/mms3_fpi_fast_l2_dis-momsaux_20150901080000_v3.4.0.cdf",
      "start": "2015-09-01T09:47:07.542327000Z",
      "stop": "2015-09-01T09:59:57.046047000Z",
      "note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms3/fpi/fast/l2/dis-momsaux/2015/09/mms3_fpi_fast_l2_dis-momsaux_20150901080000_v3.4.0.cdf. The most common cadence, 4500019000 [ns] = PT4.500019S, occurred for 26.3158% of the 45 timesteps.",
      "counts": [
        {
          "count": 45,
          "duration": 4500019000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500019S",
          "fraction": 0.2631578947368421
        },
        {
          "count": 30,
          "duration": 4500024000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500024S",
          "fraction": 0.17543859649122806
        },
        {
          "count": 28,
          "duration": 4500023000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500023S",
          "fraction": 0.16374269005847952
        },
        {
          "count": 26,
          "duration": 4500020000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.50002S",
          "fraction": 0.15204678362573099
        },
        {
          "count": 23,
          "duration": 4500025000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500025S",
          "fraction": 0.13450292397660818
        },
        {
          "count": 8,
          "duration": 4500021000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500021S",
          "fraction": 0.04678362573099415
        },
        {
          "count": 6,
          "duration": 4500018000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500018S",
          "fraction": 0.03508771929824561
        },
        {
          "count": 5,
          "duration": 4500026000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500026S",
          "fraction": 0.029239766081871343
        }
      ]
    },
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms3/fpi/fast/l2/dis-momsaux/2025/12/mms3_fpi_fast_l2_dis-momsaux_20251227180000_v3.4.0.cdf",
      "start": "2025-12-27T18:00:00.078499000Z",
      "stop": "2025-12-27T18:00:27.078796000Z",
      "note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/mms/mms3/fpi/fast/l2/dis-momsaux/2025/12/mms3_fpi_fast_l2_dis-momsaux_20251227180000_v3.4.0.cdf. The most common cadence, 4500043000 [ns] = PT4.500043S, occurred for 33.3333% of the 2 timesteps.",
      "counts": [
        {
          "count": 2,
          "duration": 4500043000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500043S",
          "fraction": 0.3333333333333333
        },
        {
          "count": 2,
          "duration": 4500056000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500056S",
          "fraction": 0.3333333333333333
        },
        {
          "count": 1,
          "duration": 4500044000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500044S",
          "fraction": 0.16666666666666666
        },
        {
          "count": 1,
          "duration": 4500055000,
          "duration_unit": "ns",
          "duration_iso8601": "PT4.500055S",
          "fraction": 0.16666666666666666
        }
      ]
    }
  ]
}