{
  "cal_frequency": [
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers2/msc_searchcoil/l2/bac/2025/ts2_l2_msc_bac_20250926_v1.1.0.cdf",
      "counts": [],
      "error": "DataType = CDF_FLOAT is not one of ['CDF_EPOCH', 'CDF_EPOCH16', 'CDF_TIME_TT2000']"
    },
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers2/msc_searchcoil/l2/bac/2026/ts2_l2_msc_bac_20260208_v1.1.0.cdf",
      "counts": [],
      "error": "DataType = CDF_FLOAT is not one of ['CDF_EPOCH', 'CDF_EPOCH16', 'CDF_TIME_TT2000']"
    }
  ],
  "Epoch": [
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers2/msc_searchcoil/l2/bac/2025/ts2_l2_msc_bac_20250926_v1.1.0.cdf",
      "start": "2025-09-26T00:00:03.286404000Z",
      "stop": "2025-09-26T23:59:39.286404000Z",
      "note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers2/msc_searchcoil/l2/bac/2025/ts2_l2_msc_bac_20250926_v1.1.0.cdf. The most common cadence, 500000000 [ns] = PT0.5S, occurred for 76.5392% of the 4264 timesteps.",
      "counts": [
        {
          "count": 4264,
          "duration": 500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT0.5S",
          "fraction": 0.7653922096571532
        },
        {
          "count": 1291,
          "duration": 64000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M4S",
          "fraction": 0.23173577454676
        },
        {
          "count": 2,
          "duration": 64000488000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M4.000488S",
          "fraction": 0.0003590019745108598
        },
        {
          "count": 2,
          "duration": 499512000,
          "duration_unit": "ns",
          "duration_iso8601": "PT0.499512S",
          "fraction": 0.0003590019745108598
        },
        {
          "count": 1,
          "duration": 64000489000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M4.000489S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 63000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M3S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 65000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M5S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 640000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT10M40S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 384000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT6M24S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 54500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT54.5S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 52500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT52.5S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 63999511000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M3.999511S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 33500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT33.5S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 20500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT20.5S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 21500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT21.5S",
          "fraction": 0.0001795009872554299
        },
        {
          "count": 1,
          "duration": 28500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT28.5S",
          "fraction": 0.0001795009872554299
        }
      ]
    },
    {
      "url": "https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers2/msc_searchcoil/l2/bac/2026/ts2_l2_msc_bac_20260208_v1.1.0.cdf",
      "start": "2026-02-08T00:01:03.048611000Z",
      "stop": "2026-02-08T23:59:02.049099000Z",
      "note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/tracers/tracers2/msc_searchcoil/l2/bac/2026/ts2_l2_msc_bac_20260208_v1.1.0.cdf. The most common cadence, 500000000 [ns] = PT0.5S, occurred for 89.1597% of the 10462 timesteps.",
      "counts": [
        {
          "count": 10462,
          "duration": 500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT0.5S",
          "fraction": 0.8915970683483893
        },
        {
          "count": 1253,
          "duration": 64000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M4S",
          "fraction": 0.10678370547128004
        },
        {
          "count": 2,
          "duration": 28000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT28S",
          "fraction": 0.0001704448610874382
        },
        {
          "count": 2,
          "duration": 63999511000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M3.999511S",
          "fraction": 0.0001704448610874382
        },
        {
          "count": 2,
          "duration": 63999512000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M3.999512S",
          "fraction": 0.0001704448610874382
        },
        {
          "count": 1,
          "duration": 44000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT44S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 64504395000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M4.504395S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 54500000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT54.5S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 33000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT33S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 21000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT21S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 8000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT8S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 53000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT53S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 57000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT57S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 63999023000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M3.999023S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 29000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT29S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 63999024000,
          "duration_unit": "ns",
          "duration_iso8601": "PT1M3.999024S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 30000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT30S",
          "fraction": 8.52224305437191e-05
        },
        {
          "count": 1,
          "duration": 22000000000,
          "duration_unit": "ns",
          "duration_iso8601": "PT22S",
          "fraction": 8.52224305437191e-05
        }
      ]
    }
  ]
}