{
  "startDate": "1998-01-29T00:07:03Z",
  "stopDate": "2024-12-31T23:58:24Z",
  "sampleStartDate": "2024-12-30T00:04:36Z",
  "sampleStopDate": "2024-12-30T23:49:55Z",
  "cadence": "PT12M6S",
  "x_cadence_fraction": 0.5847457627118644,
  "x_cadence_note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/ace/swics/level_2_cdaweb/swi_h6/1998/ac_h6_swi_19980129_v03.cdf. The most common cadence, 726000 [ms] = PT12M6S, occurred for 58.4746% of the 69 timesteps.",
  "maxRequestDuration": "PT4275950S",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesA.html#AC_H6_SWI",
  "contact": "G. Gloeckler @ University of Maryland",
  "resourceID": "https://doi.org/10.48322/mfxn-cw77",
  "additionalMetadata": {
    "name": "SPASE",
    "contentURL": "https://spase-metadata.org/NASA/NumericalData/ACE/SWICS/L2/PT12M.html"
  },
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "length": 24,
      "fill": null,
      "x_description": "Time, beginning of interval",
      "x_cdf_NAME": "Epoch",
      "x_cdf_DataType": "CDF_EPOCH"
    },
    {
      "name": "nH",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Solar Wind Proton Number Density, scalar",
      "fill": "-1.0E31",
      "units": "#/cm^3",
      "x_label": "Proton_density",
      "x_format": ".4f",
      "x_fractionDigits": "4",
      "x_cdf_FORMAT": "f8.4",
      "x_cdf_FIELDNAM": "Proton density",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "nH_err",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Proton Number Density statistical uncertainty",
      "fill": "-1.0E31",
      "units": "#/cm^3",
      "x_label": "Proton_density_err",
      "x_format": ".6f",
      "x_fractionDigits": "6",
      "x_cdf_FORMAT": "f10.6",
      "x_cdf_FIELDNAM": "Proton density_err",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "vH",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Solar Wind Proton speed, scalar",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Proton_Speed",
      "x_format": ".2f",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "f8.2",
      "x_cdf_FIELDNAM": "Solar Wind Proton Speed",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
    },
    {
      "name": "vthH",
      "type": "double",
      "x_cdf_DataType": "CDF_REAL4",
      "description": "Solar Wind Proton Thermal speed, scalar",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Proton_Thermal_Speed",
      "x_format": ".2f",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "f8.2",
      "x_cdf_FIELDNAM": "Solar Wind Proton Thermal speed",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "Epoch"
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  ],
  "x_info_author": "bw",
  "x_cdaweb_hapi_version": "20260130.0606",
  "x_info_caching": false,
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "HAPI": "3.2",
  "x_LastUpdate": "2026-04-14T15:08:15Z"
}