{
  "startDate": "1974-06-06T04:28:06Z",
  "stopDate": "1978-04-28T17:57:30Z",
  "sampleStartDate": "1978-04-27T02:49:31Z",
  "sampleStopDate": "1978-04-27T20:29:25Z",
  "cadence": "PT1.89S",
  "x_cadence_fraction": 0.6651552145099408,
  "x_cadence_note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/hawkeye/mag/mag_h0/1974/hk_h0_mag_19740606_v01.cdf. The most common cadence, 1890 [ms] = PT1.89S, occurred for 66.5155% of the 20977 timesteps. ",
  "maxRequestDuration": "PT52995M",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesH.html#HK_H0_MAG",
  "contact": "J. Van Allen @ University of Iowa",
  "resourceID": " ",
  "additionalMetadata": {
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  },
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      "type": "isotime",
      "units": "UTC",
      "length": 24,
      "fill": null,
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      "x_cdf_DataType": "CDF_EPOCH"
    },
    {
      "name": "B_total",
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      "fill": "-1.0E31",
      "units": "nT",
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      "x_cdf_FORMAT": "F9.2",
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    },
    {
      "name": "B_gsm",
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      "fill": "-1.0E31",
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        "By GSM",
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  "x_cdaweb_hapi_version": "20260130.0606",
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    "code": 1200,
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  "x_LastUpdate": "2026-04-14T15:10:12Z"
}