{ "startDate": "1973-10-31T20:10:27Z", "stopDate": "2006-07-26T17:10:35Z", "sampleStartDate": "2006-07-25T00:03:54Z", "sampleStopDate": "2006-07-25T23:59:49Z", "cadence": "PT28S", "x_cadence_fraction": 0.1388888888888889, "x_cadence_note": "Counts based on variable 'Epoch' in https://cdaweb.gsfc.nasa.gov/sp_phys/data/imp/imp8/plasma_mit/mitplasma_h0/1973/i8_h0_mitplasma_19731031_v01.cdf. The most common cadence, 28000 [ms] = PT28S, occurred for 13.8889% of the 5 timesteps. ", "maxRequestDuration": "PT4307750S", "resourceURL": "https://cdaweb.gsfc.nasa.gov/misc/NotesI.html#I8_H0_MITPLASMA", "contact": "A. Lazarus @ MIT", "resourceID": "https://doi.org/10.48322/4dhv-w146", "additionalMetadata": { "name": "SPASE", "contentURL": "https://spase-metadata.org/NASA/NumericalData/IMP8/PLS/PT01M.html" }, "parameters": [ { "name": "Time", "type": "isotime", "units": "UTC", "length": 24, "fill": null, "x_description": "Time", "x_cdf_NAME": "Epoch", "x_cdf_DataType": "CDF_EPOCH" }, { "name": "Spacecraft", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "Spacecraft flag (6/7/8 =IMP 6/7/8)", "fill": "9", "units": "8=IMP8 ", "x_label": "Spacecraft", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "Spacecraft", "x_cdf_DEPEND_0": "Epoch" }, { "name": "decimal_year", "type": "double", "x_cdf_DataType": "CDF_REAL8", "description": "Decimal Year", "fill": "100000.0", "units": " ", "x_label": "Decimal_Year", "x_format": ".7f", "x_fractionDigits": "7", "x_cdf_FORMAT": "f14.7", "x_cdf_FIELDNAM": "Decimal Year", "x_cdf_DEPEND_0": "Epoch" }, { "name": "Region", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "Region flag (1=Solar Wind, 2= Solar Wind or Magnetosheath, 3= Not Solar Wind)", "fill": "9", "units": "(1=SW,2=MULT,3=NSW)", "x_label": "Region_Flag", "x_cdf_FORMAT": "I1", "x_cdf_FIELDNAM": "Region", "x_cdf_DEPEND_0": "Epoch" }, { "name": "mode", "type": "integer", "x_cdf_DataType": "CDF_BYTE", "description": "Operating mode flag [1:Non-tracking (NTMS), 2:Tracking (TMS), 3:Acquisition (AQM)]", "fill": "9", "units": "(1=NTMS,2=TMS,3=AQM)", "x_label": "Operating_Mode", "x_cdf_FORMAT": "I3", "x_cdf_FIELDNAM": "Operating mode", "x_cdf_DEPEND_0": "Epoch" }, { "name": "xyzgse", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "IMP8 Position, Cartesian-GSE - orbit plot", "fill": "9999.0", "units": "Re", "x_label": [ "IMP8_X-GSE", "IMP8_Y-GSE", "IMP8_Z-GSE" ], "x_format": ".2f", "x_fractionDigits": "2", "x_cdf_FORMAT": "f8.2", "x_cdf_FIELDNAM": "XYZ components (GSE)", "x_cdf_DISPLAY_TYPE": "default_dimensioncoord=gse", "x_cdf_DEPEND_0": "Epoch", "size": [ 3 ] }, { "name": "ygsm", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "IMP8 position, Y-component, GSM", "fill": "9999.0", "units": "Re", "x_label": "S/C_Y-GSM", "x_format": ".2f", "x_fractionDigits": "2", "x_cdf_FORMAT": "F8.2", "x_cdf_FIELDNAM": "Y-component, GSM", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "zgsm", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "IMP8 position, Z-component, GSM", "fill": "9999.0", "units": "Re", "x_label": "S/C_Z-GSM", "x_format": ".2f", "x_fractionDigits": "2", "x_cdf_FORMAT": "F8.2", "x_cdf_FIELDNAM": "Z-component, GSM", "x_cdf_DISPLAY_TYPE": "default_dimension", "x_cdf_DEPEND_0": "Epoch" }, { "name": "V_fit", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "(Fits-based, no region selected) Proton Flow Speed", "fill": "9999.0", "units": "km/sec (from fits)", "x_label": "Proton_Speed", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "V fit", "x_cdf_DEPEND_0": "Epoch" }, { "name": "V_fit_rfilt", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Fits-based, solar wind only) Proton Flow Speed", "fill": "9999.0", "units": "km/sec (from fits)", "x_label": "Proton_Speed_SW", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "V fit", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "region_filt", "x_cdf_COMPONENTS": [ "V_fit", "Region" ], "x_cdf_DEPEND_0": "Epoch" }, { "name": "V_mom", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Moments-based, no region selected) Proton Flow Speed", "fill": "9999.0", "units": "km/sec (from moments)", "x_label": "Proton_Speed", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "V moments", "x_cdf_DEPEND_0": "Epoch" }, { "name": "V_mom_rfilt", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Moments-based, solar wind only) Proton Flow Speed", "fill": "9999.0", "units": "km/sec (from moments)", "x_label": "Proton_Speed_SW", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "V moments", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "region_filt", "x_cdf_COMPONENTS": [ "V_mom", "Region" ], "x_cdf_DEPEND_0": "Epoch" }, { "name": "protonV_thermal_fit", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "(Fits-based, no region selected) Proton most-probable thermal speed ", "fill": "9999.0", "units": "km/sec (from fits)", "x_label": "Proton_Thermal_Speed", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "Proton V thermal fit", "x_cdf_DEPEND_0": "Epoch" }, { "name": "protonV_thermal_fit_rfilt", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Fits-based, solar wind only) Proton most-probable thermal speed", "fill": "9999.0", "units": "km/sec (from fits)", "x_label": "Proton_Thermal_Speed_SW", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "Proton V thermal fit", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "region_filt", "x_cdf_COMPONENTS": [ "protonV_thermal_fit", "Region" ], "x_cdf_DEPEND_0": "Epoch" }, { "name": "protonV_thermal_mom", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Moments-based, no region selected) Proton most-probable thermal speed", "fill": "9999.0", "units": "km/sec (from moments)", "x_label": "Proton_Thermal_Speed", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "Proton V thermal moments", "x_cdf_DEPEND_0": "Epoch" }, { "name": "protonV_thermal_mom_rfilt", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Moments-based, solar wind only) Proton most-probable thermal speed", "fill": "9999.0", "units": "km/sec (from moments)", "x_label": "Proton_Thermal_Speed_SW", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "Proton V thermal moments", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "region_filt", "x_cdf_COMPONENTS": [ "protonV_thermal_mom", "Region" ], "x_cdf_DEPEND_0": "Epoch" }, { "name": "proton_density_fit", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "(Fits-based, no region selected) Proton number density", "fill": "9999.0", "units": "n/cc (from fits)", "x_label": "Proton_Number_Density", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "Proton density fit", "x_cdf_DEPEND_0": "Epoch" }, { "name": "proton_density_fit_rfilt", "type": "double", "x_cdf_DataType": "CDF_REAL4", "description": "--> (Fits-based, solar wind only) Proton number density", "fill": "9999.0", "units": "n/cc (from fits)", "x_label": "Proton_Number_Density_SW", "x_format": ".1f", "x_fractionDigits": "1", "x_cdf_FORMAT": "f7.1", "x_cdf_FIELDNAM": "Proton density fit", "x_cdf_VIRTUAL": "true", "x_cdf_FUNCT": "region_filt", "x_cdf_COMPONENTS": [ "proton_density_fit", "Region" ], 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