{"mms1_fpi_fast_l2_des-momsaux_00000000_v01.cdf":{"CDFFileInfo":[{"FileVersion":"3.9.1"},{"Format":"SINGLE"},{"Majority":"COLUMN"},{"Encoding":"IBMPC"}],"CDFglobalAttributes":[{"Project":[{"0":"STP>Solar-Terrestrial Physics"}]},{"Source_name":[{"0":"MMS1>MMS Satellite Number 1"}]},{"Discipline":[{"0":"Space Physics>Magnetospheric Science"}]},{"Data_type":[{"0":"fast_l2_des-momsaux"}]},{"Descriptor":[{"0":"DES>Dual Electron Spectrometers"}]},{"File_naming_convention":[{"0":"source_descriptor_datatype_yyyyMMddHHmmss"}]},{"Data_version":[{"0":" "}]},{"PI_name":[{"0":"J. Burch, B. Giles"}]},{"PI_affiliation":[{"0":"SwRI, GSFC"}]},{"TEXT":[{"0":"FPI usually operates in Fast Survey (FS) Mode in the MMS Region Of Interest (ROI) for the current Mission Phase. Data are taken at burst (30/150 ms for DES/DIS) resolution in this mode. Data are also made available at survey (4.5 s) resolution. Per mission design, not all burst-resolution data are downlinked, but all survey data are downlinked. Planning around calibration activities, avoidance of Earth radiation belts, etc, when possible, FPI usually operates in Slow Survey (SS) Mode (60 s resolution) outside of ROI. This product contains partial moments that come from performing the standard moment integrals over a limited portion of velocity space. The resulting quantities are named similarly to their corresponding standard moments, but are decorated with 'part' to differentiate. For example, density_part is the density moment integrated from a particular energy step to infinity. These partial moments are formed from the indicated data type (DES/DIS burst, FS or SS). For convenience, some additional parameters are included to augment those most commonly found in a moments product of this sort, plus time-stamps and other annotation characterizing the state of the instrument system at the indicated time."}]},{"Instrument_type":[{"0":"Plasma and Solar Wind"},{"1":"Particles (space)"}]},{"Mission_group":[{"0":"MMS"}]},{"Logical_source":[{"0":"mms1_fpi_fast_l2_des-momsaux"}]},{"Logical_file_id":[{"0":" "}]},{"Logical_source_description":[{"0":"MMS Satellite Number 1 Dual Electron Spectrometer FastSurvey-resolution auxiliary moments"}]},{"Time_resolution":[{"0":"4.5 seconds"}]},{"Rules_of_use":[{"0":"See FPI Version Release Notes (https://lasp.colorado.edu/mms/sdc/public/datasets/fpi/) for rules of use."}]},{"Generated_by":[{"0":"FPI ITF, NASA/GSFC Code 673"}]},{"Generation_date":[{"0":" "}]},{"Generation_site":[{"0":"ITF"}]},{"MODS":[{"0":" "}]},{"LINK_TEXT":[{"0":"MMS home page"},{"1":"MMS at NASA GSFC"},{"2":"Science Data Center"},{"3":"FPI overview"}]},{"LINK_TITLE":[{"0":"at GSFC"},{"1":"Homepage"},{"2":"at LASP"},{"3":"at NASA"}]},{"HTTP_LINK":[{"0":"https://mms.gsfc.nasa.gov"},{"1":"https://mms.gsfc.nasa.gov/index.html"},{"2":"http://lasp.colorado.edu/mms/sdc"},{"3":"https://mms.gsfc.nasa.gov"}]},{"Skeleton_version":[{"0":"$Revision: 9524 $"}]},{"Skeleton_revdate":[{"0":"$Date: 2021-03-09 13:14:05 -0500 (Tue, 09 Mar 2021) $"}]},{"Correction_table_name":[{"0":"mms1_des_fast_f1ct_v43-1288_1295_p15-17.cdf"}]},{"Correction_table_rev":[{"0":"9745"}]},{"Correction_table_scaling_factor":[{"0":"0.80000"}]},{"Energy_table_name":[{"0":"energies_des_15-17.txt"}]},{"Dead_time_correction":[{"0":"100 ns"}]},{"Magnetic_field_filenames":[{"0":"mms1_afg_srvy_l2pre_20220205_v5.332.0.cdf mms1_afg_srvy_l2pre_20220206_v5.333.0.cdf"}]},{"Spacecraft_potential_filenames":[{"0":"mms1_edp_fast_l2_scpot_20220205000000_v2.7.1.cdf mms1_edp_fast_l2_scpot_20220206000000_v2.7.3.cdf"}]},{"Spacecraft_potential_scaling_factor":[{"0":"1.0"}]},{"Spacecraft_potential_offset":[{"0":"0.0"}]},{"Photoelectron_model_filenames":[{"0":"mms_fpi_fast_l2_des-bgdist_v1.1.0_p15-17.cdf"}]},{"Photoelectron_model_scaling_factor":[{"0":"0.6000000"}]},{"Photoelectron_filter":[{"0":"Off"}]},{"Low_energy_extrapolation":[{"0":"Disabled"}]},{"High_energy_extrapolation":[{"0":"Enabled"}]},{"Spacecraft_attitude_filenames":[{"0":"MMS1_DEFATT_2022036_2022037.V00"}]},{"Lower_energy_integration_limit":[{"0":"10.00eV"}]},{"Upper_energy_integration_limit":[{"0":"30000.00eV"}]},{"Energy_e0":[{"0":"100.00eV"}]},{"Scp_energy_fraction":[{"0":"1.00eV"}]},{"Skymap_avgN":[{"0":"1"}]}],"CDFVariables":[{"Epoch":[{"VarDescription":[{"DataType":"CDF_TIME_TT2000"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":"0000-01-01T00:00:00.000000000"}]},{"VarAttributes":[{"CATDESC":"Nanoseconds since J2000"},{"DELTA_PLUS_VAR":"Epoch_plus_var"},{"DELTA_MINUS_VAR":"Epoch_minus_var"},{"FIELDNAM":"Time tags"},{"FILLVAL":"9999-12-31T23:59:59.999999999"},{"LABLAXIS":"Epoch"},{"MONOTON":"INCREASE"},{"REFERENCE_POSITION":"Rotating Earth Geoid"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1.0e-9>s"},{"TIME_BASE":"J2000"},{"TIME_SCALE":"Terrestrial Time"},{"UNITS":"ns"},{"VALIDMIN":"1990-01-01T00:00:00.000000000"},{"VALIDMAX":"2099-12-31T23:59:59.000000000"},{"VAR_NOTES":"MMS1 FPI/DES survey data begin-time; derived from survey packet time."},{"VAR_TYPE":"support_data"}]}]},{"Epoch_plus_var":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"NOVARY"},{"NumWrittenRecords":1},{"PadValue":-1.0E+30},{"BlockingFactor":1}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES epoch plus var"},{"FIELDNAM":"MMS1 FPI/DES epoch plus var"},{"FORMAT":"F4.2"},{"SI_CONVERSION":"1.0>s"},{"UNITS":"s"},{"VALIDMIN":0.0},{"VALIDMAX":4.5},{"VAR_TYPE":"support_data"}]},{"VarData":[4.5]}]},{"Epoch_minus_var":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"NOVARY"},{"NumWrittenRecords":1},{"PadValue":-1.0E+30},{"BlockingFactor":1}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES epoch minus var"},{"FIELDNAM":"MMS1 FPI/DES epoch minus var"},{"FORMAT":"F4.2"},{"SI_CONVERSION":"1.0>s"},{"UNITS":"s"},{"VALIDMIN":0.0},{"VALIDMAX":4.5},{"VAR_TYPE":"support_data"}]},{"VarData":[0.0]}]},{"mms1_des_errorflags_fast":[{"VarDescription":[{"DataType":"CDF_UINT4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":4294967294}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES vector of data-quality indicators at survey-start time"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES dataQuality errorFlags"},{"FILLVAL":4294967295},{"FORMAT":"I10"},{"LABLAXIS":"errFlags"},{"SCALETYP":"linear"},{"SI_CONVERSION":" > "},{"UNITS":"32-bit error flags"},{"VALIDMIN":0},{"VALIDMAX":4294967294},{"VAR_NOTES":"Value of zero signifies no quality errors. 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Each count represents 1/16 deg of observatory spin-phase.  Zero spin-phase angle indicates obs +X-axis aligned with the sun-sensor axis."},{"VAR_TYPE":"data"}]}]},{"mms1_des_startdelphi_angle_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES Del-Phi (obs spin-phase) angle at survey-start time"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES start Del-Phi angle"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DelPhi_ang"},{"SCALETYP":"linear"},{"SI_CONVERSION":"0.0174532925>rad"},{"UNITS":"deg"},{"VALIDMIN":0.0},{"VALIDMAX":360.0},{"VAR_NOTES":"Nominally, spin-phase angles range over [0, 360) deg.  Each count represents 1/16 deg of observatory spin-phase.  Zero spin-phase angle indicates obs +X-axis aligned with the sun-sensor axis."},{"VAR_TYPE":"data"}]}]},{"mms1_des_pitchangdist_lowen_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[30]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron pitch-angle distribution for \"low\" energies during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_alpha_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES pitchAngDist_lowEn"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"PAD_low"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Low energy bin: energy steps 0-10 (of total steps 0-31). Pitch-angle bin size: 6 deg. Note that pitch angles are calculated in the spacecraft frame; i.e., not shifted by the bulk velocity."},{"VAR_TYPE":"data"}]}]},{"mms1_des_pitchangdist_miden_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[30]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron pitch-angle distribution for \"mid\" energies during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_alpha_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES pitchAngDist_midEn"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"PAD_mid"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Mid energy bin: energy steps 11-20 (of total steps 0-31). Pitch-angle bin size: 6 deg. Note that pitch angles are calculated in the spacecraft frame; i.e., not shifted by the bulk velocity."},{"VAR_TYPE":"data"}]}]},{"mms1_des_pitchangdist_highen_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[30]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron pitch-angle distribution for \"high\" energies during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_alpha_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES pitchAngDist_highEn"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"PAD_high"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"High energy bin: energy steps 21-31 (of total steps 0-31). Pitch-angle bin size: 6 deg. Note that pitch angles are calculated in the spacecraft frame; i.e., not shifted by the bulk velocity."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_px_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy spectrum \"near\" +X_DBCS during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_pX"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_px"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction is within 45 degrees (polar and azimuthal) of the +x axis (instrument look angles: 45deg <= theta < 135deg and 135deg <= phi < 225deg)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_mx_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy spectrum \"near\" -X_DBCS during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_mX"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_mx"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction is within 45 degrees (polar and azimuthal) of the -x axis (instrument look angles: 45deg <= theta < 135deg and phi >= 315deg or phi < 45deg)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_py_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy spectrum \"near\" +Y_DBCS during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_pY"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_py"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction is within 45 degrees (polar and azimuthal) of the +y axis (instrument look angles: 45deg <= theta < 135deg and 225deg <= phi < 315deg)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_my_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy spectrum \"near\" -Y_DBCS during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_mY"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_my"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction is within 45 degrees (polar and azimuthal) of the -y axis (instrument look angles: 45deg <= theta < 135deg and 45deg <= phi < 135deg)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_pz_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy spectrum \"near\" +Z_DBCS during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_pZ"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_pz"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction is within 45 degrees (polar and azimuthal) of the +z axis (instrument look angles: 135deg <= theta < 180deg and 0deg <= phi < 360deg)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_mz_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy spectrum \"near\" -Z_DBCS during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_mZ"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_mz"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction is within 45 degrees (polar and azimuthal) of the -z axis (instrument look angles: 0deg <= theta < 45deg and 0deg <= phi < 360deg)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_par_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy parallel to the magnetic field direction during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_par"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_par"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction (not instrument look direction) is within 30 degrees of the magnetic field direction."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_anti_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy anti-parallel to the magnetic field direction during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_anti"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_anti-par"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction (not instrument look direction) is within 150 degrees of the magnetic field direction."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_perp_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron energy perpendicular to the magnetic field direction during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_perp"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_perp"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over particles whose DBCS flow direction (not instrument look direction) is within 60-120 degrees of the magnetic field direction."},{"VAR_TYPE":"data"}]}]},{"mms1_des_energyspectr_omni_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[32]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES omni-directional electron energy spectrum during this survey"},{"DEPEND_0":"Epoch"},{"DEPEND_1":"mms1_des_energy_fast"},{"DISPLAY_TYPE":"spectrogram"},{"FIELDNAM":"MMS1 FPI/DES energySpectr_omni"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"DEF_omni"},{"SCALETYP":"log"},{"SI_CONVERSION":"1.e4>m^-2 s^-1 sr^-1"},{"UNITS":"keV/(cm^2 s sr keV)"},{"VALIDMIN":0.0},{"VALIDMAX":1.0E+30},{"VAR_NOTES":"Differential energy flux by energy bin, averaged (weighted by solid angle) over all directions (flow or look)."},{"VAR_TYPE":"data"}]}]},{"mms1_des_numberdensity_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron number density during this survey"},{"DELTA_PLUS_VAR":"mms1_des_numberdensity_err_fast"},{"DELTA_MINUS_VAR":"mms1_des_numberdensity_err_fast"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES number density"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"N"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1e6>m^-3"},{"UNITS":"cm^-3"},{"VALIDMIN":0.0},{"VALIDMAX":100000.0},{"VAR_TYPE":"data"}]}]},{"mms1_des_numberdensity_err_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron number density error during this survey"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES number density error"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"N_err"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1e6>m^-3"},{"UNITS":"cm^-3"},{"VALIDMIN":0.0},{"VALIDMAX":100000.0},{"VAR_TYPE":"support_data"}]}]},{"mms1_des_densityextrapolation_low_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES estimated (via extrapolation to 0) contribution to density integral below 10eV"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES density extrapolation (low)"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"N"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1e6>m^-3"},{"UNITS":"cm^-3"},{"VALIDMIN":0.0},{"VALIDMAX":100000.0},{"VAR_TYPE":"data"}]}]},{"mms1_des_densityextrapolation_high_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":0},{"RecVariance":"VARY"},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES estimated (via extrapolation to infinity) contribution to density integral above 30keV"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES density extrapolation (high)"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABLAXIS":"N"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1e6>m^-3"},{"UNITS":"cm^-3"},{"VALIDMIN":0.0},{"VALIDMAX":100000.0},{"VAR_TYPE":"data"}]}]},{"mms1_des_bulkv_dbcs_fast":[{"VarDescription":[{"DataType":"CDF_REAL4"},{"NumElements":1},{"NumDims":1},{"DimSizes":[3]},{"RecVariance":"VARY"},{"DimVariances":["VARY"]},{"PadValue":-1.0E+30}]},{"VarAttributes":[{"CATDESC":"MMS1 FPI/DES electron bulk-velocity vector in DBCS during this survey"},{"COORDINATE_SYSTEM":"DBCS>Despun Body Coordinate System"},{"DELTA_PLUS_VAR":"mms1_des_bulkv_err_fast"},{"DELTA_MINUS_VAR":"mms1_des_bulkv_err_fast"},{"DEPEND_0":"Epoch"},{"DISPLAY_TYPE":"time_series"},{"FIELDNAM":"MMS1 FPI/DES DBCS bulk v"},{"FILLVAL":-1.0E+31},{"FORMAT":"E12.2"},{"LABL_PTR_1":"mms1_des_bulkv_dbcs_label_fast"},{"REPRESENTATION_1":"mms1_des_cartrep_fast"},{"SCALETYP":"linear"},{"SI_CONVERSION":"1.0e3>m 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