{
  "startDate": "2007-04-01T00:00Z",
  "stopDate": "2017-07-31T00:00Z",
  "sampleStartDate": "2016-01-01T00:00Z",
  "sampleStopDate": "2016-12-31T00:00Z",
  "cadence": "P1D",
  "x_cadence_fraction": 1,
  "x_cadence_note": "Counts based on variable 'epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/stereo/ahead/l3/plastic/heplus/24hr/2007/sta_l3_pla_heplus_24hr_20070101_v06.cdf. The most common cadence, 86400000 [ms] = P1D, occurred for all 274 timesteps. ",
  "maxRequestDuration": "P3774D",
  "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesS.html#STA_L3_PLA_HEPLUS_24HR",
  "contact": "Dr. Antoinette Galvin @ University of New Hampshire",
  "resourceID": "https://doi.org/10.48322/p8nz-hw11",
  "additionalMetadata": {
    "name": "SPASE",
    "contentURL": "https://spase-metadata.org/NASA/NumericalData/STEREO-A/PLASTIC/HeliumPlusParameter/P1D.html"
  },
  "parameters": [
    {
      "name": "Time",
      "type": "isotime",
      "units": "UTC",
      "length": 24,
      "fill": null,
      "x_description": "Time, beginning of interval, daily resolution",
      "x_cdf_NAME": "epoch",
      "x_cdf_DataType": "CDF_EPOCH"
    },
    {
      "name": "proton_bulk_speed",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Proton Bulk Speed. 1D Maxwellian Fit.",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Proton Speed",
      "x_format": ".3e",
      "x_fractionDigits": "3",
      "x_cdf_FORMAT": "E11.3",
      "x_cdf_FIELDNAM": "Proton Bulk Speed",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "proton_thermal_speed",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Proton Thermal Speed. 1D Maxwellian Fit.",
      "fill": "-1.0E31",
      "units": "km/s",
      "x_label": "Proton Thermal_Speed",
      "x_format": ".2e",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "E9.2",
      "x_cdf_FIELDNAM": "Proton Thermal_Speed",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "proton_number_density",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "Proton Number Density. 1D Maxwellian Fit.",
      "fill": "-1.0E31",
      "units": "1/cm3",
      "x_label": "Proton No. Density",
      "x_format": ".2e",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "E9.2",
      "x_cdf_FIELDNAM": "Proton No. Density",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch"
    },
    {
      "name": "he_plus_rel_energy_flux",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "He+ Relative Energy Flux in 4 ranges of V/Vsw.",
      "fill": "-1.0E31",
      "units": "cts/s (EffCorr,PropTo_DiffEFlux)",
      "x_label": [
        "He+_Rel_EFlux_8.0>V/Vsw>3.5",
        "He+_Rel_EFlux_3.5>V/Vsw>2.5",
        "He+_Rel_EFlux_2.5>V/Vsw>1.85",
        "He+_Rel_EFlux_1.85>V/Vsw>1.44"
      ],
      "x_format": ".2e",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "E9.2",
      "x_cdf_FIELDNAM": "HePlus_Rel_Energy_Flux",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch",
      "size": [
        4
      ]
    },
    {
      "name": "he_plus_counts",
      "type": "double",
      "x_cdf_DataType": "CDF_FLOAT",
      "description": "He+ Counts in 4 ranges of V/Vsw.",
      "fill": "-1.0E31",
      "units": "Counts",
      "x_label": [
        "He+_Cts_8.0>V/Vsw>3.5",
        "He+_Cts_3.5>V/Vsw>2.5",
        "He+_Cts_2.5>V/Vsw>1.85",
        "He+_Cts_1.85>V/Vsw>1.44"
      ],
      "x_format": ".2e",
      "x_fractionDigits": "2",
      "x_cdf_FORMAT": "E9.2",
      "x_cdf_FIELDNAM": "HePlus_Counts",
      "x_cdf_DISPLAY_TYPE": "default_dimension",
      "x_cdf_DEPEND_0": "epoch",
      "size": [
        4
      ]
    }
  ],
  "x_info_author": "bw",
  "x_cdaweb_hapi_version": "20260130.0606",
  "x_info_caching": false,
  "status": {
    "code": 1200,
    "message": "OK"
  },
  "HAPI": "3.2",
  "x_LastUpdate": "2026-04-12T15:14:28Z"
}