{
  "epoch": [
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/swapi/l3b/combined/2026/imap_swapi_l3b_combined_20260428_v001.0004.cdf",
      "start": "2026-04-28T00:04:56.129000000Z",
      "stop": "2026-04-28T23:54:56.054000000Z",
      "note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/swapi/l3b/combined/2026/imap_swapi_l3b_combined_20260428_v001.0004.cdf. The most common cadence, 599999000000 [ns] = PT9M59.999S, occurred for 52.4476% of the 75 timesteps.",
      "counts": [
        {
          "count": 75,
          "duration": 599999000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT9M59.999S",
          "fraction": 0.5244755244755245
        },
        {
          "count": 68,
          "duration": 600000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT10M",
          "fraction": 0.4755244755244755
        }
      ]
    },
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/swapi/l3b/combined/2026/imap_swapi_l3b_combined_20260428_v001.0004.cdf",
      "start": "2026-04-28T00:04:56.129000000Z",
      "stop": "2026-04-28T23:54:56.054000000Z",
      "note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imap/swapi/l3b/combined/2026/imap_swapi_l3b_combined_20260428_v001.0004.cdf. The most common cadence, 599999000000 [ns] = PT9M59.999S, occurred for 52.4476% of the 75 timesteps.",
      "counts": [
        {
          "count": 75,
          "duration": 599999000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT9M59.999S",
          "fraction": 0.5244755244755245
        },
        {
          "count": 68,
          "duration": 600000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT10M",
          "fraction": 0.4755244755244755
        }
      ]
    }
  ]
}