Document of MAVEN In Situ Key Parameters (Table 13 for the List of Variables) 

Spacecraft event time for this data record (UTC Epoch time from 01-Jan-0000 00:00:00.000 without leap seconds), one element per ion distribution (NUM_DISTS elements)

Derived from the LP sweep and when available from the plasma line

Integrated wave power from the onboard calculated FFT, frequencies important for wave heating

Range: 0-100, where 100 is the highest confidence level, use data with quality flag of 50 or above

---> EUV irradiance wave power 0.1-7.0 nm data quality (LPW-EUV)

0 = good solar, 1 = occultation, 2 = no pointing info, 3 = Sun NOT fully in FOV, 4 = Sun NOT in FOV, 5 = windowed, 6 = eclipse, 7 = spare

---> EUV irradiance wave power Lyman-alpha data quality (LPW-EUV)

Density of solar wind or magnetosheath electrons based on moments of the electron distribution after correcting for the spacecraft potential

Statistical uncertainty,  (1 sigma),  not including systematic error

Temperature of solar wind or magnetosheath electrons based on moments of the electron distribution after correcting for the spacecraft potential

Electron energy flux parallel to the magnetic field vector (0-90 degrees pitch angle)

---> Electron energy flux parallel 100-500 eV data quality (SWEA)

---> Electron energy flux parallel 500-1000 eV data quality (SWEA)

Electron energy flux anti-parallel to the magnetic field vector (90-180 degrees pitch angle)

---> Electron energy flux anti-parallel 5-100 eV data quality (SWEA)

---> Electron energy flux anti-parallel 100-500 eV data quality (SWEA)

---> Electron energy flux anti-parallel 500-1000 eV data quality (SWEA)

Energy spectrum shape parameter used to distingush between ionospheric photoelectrons  and solar wind electrons

Total ion density from onboard moment calculation, assuming 100% protons (SWIA)

Quality flag (0 = bad, 1 = good) indicating whether the distribution is well-measured and decommutation parameters are definite

Bulk ion flow velocity XYZ component from onboard moment calculation, assuming 100% protons (SWIA)

Scalar ion temperature from onboard moment calculation, assuming 100% protons (SWIA)

Ion dynamic pressure computed on ground from density and velocity moments, assuming 100% protons (SWIA)

Integer flag bits, Valid=0, Flag=1, See KP SIS for bit descriptions (formatted as a float in order to include NaN values for data gaps) 

H+ number density below TBD altitude determined from APID c6 (32 energy x 64 mass) while in Ram or Conic modes

O+ number density below TBD altitude determined from APID c6 (32 energy x 64 mass) while in Ram or Conic modes

O2+ number density below TBD altitude determined from APID c6 (32 energy x 64 mass) while in Ram or Conic modes

H+ RAM temperature below TBD altitude determined from APID c6 (32 energy x 64 mass) while in Ram or Conic modes

O+ RAM temperature below TBD altitude determined from APID c6 (32 energy x 64 mass) while in Ram or Conic modes

O2+ RAM temperature below TBD altitude determined from APID c6 (32 energy x 64 mass) while in Ram or Conic modes

O2+ MAVEN_APP XYZ component of velocity below TBD altitude determined from APID c6 while in Ram or Conic mode (STATIC)

---> O2+ MAVEN_APP XYZ component of velocity data quality (STATIC)

O2+ MSO XYZ component of velocity below TBD altitude while in Ram or Conic mode (STATIC)

H+ omni-directional flux above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

H+ omni-directional characteristic energy above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

HE+ omni-directional flux above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

HE+ omni-directional characteristic energy above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

O+ omni-directional flux above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

O+ omni-directional characteristic energy above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

O2+ omni-directional flux above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

O2+ omni-directional characteristic energy above TBD altitude determined from APID c6 while in Pickup, Eclipse and Protect mode

H+ MSO X-direction of flux above TBD altitude determined from TBD APID while in Pickup and Scan mode (STATIC)

H+ flux angular width above TBD altitude determined from TBD APID while in Pickup and Scan mode

Dominant pickup ion MSO XYZ direction of flux above TBD altitude determined from APID D0 and CE while in Pickup, Eclipse and Protect mode

Dominant pickup ion flux angular width above TBD altitude determined from APID D0 and CE while in Pickup, Eclipse and Protect mode

---> Dominant pickup ion characteristic angular width DQ (STATIC)

Number flux of ions, integrated over the energy range 0.03-1.0 MeV

Standard uncertainty in total ion flux, based on Poisson statistics

Number flux of electrons, integrated over the energy range 30-300 keV

---> Electron energy flux (30-300 keV), FOV 1-F data quality (SEP)

Standard uncertainty in total electron flux, based on Poisson statistics

---> Electron energy flux (30-300 keV), FOV 1-R data quality (SEP)

---> Electron energy flux (30-300 keV), FOV 2-F data quality (SEP)

---> Electron energy flux (30-300 keV), FOV 2-R data quality (SEP)

Magnetic field vector component in the XYZ direction in MSO coordinates (MAG)

---> Magnetic field vector component in MSO coordinates data quality (MAG)

Magnetic field vector component in the XYZ direction in GEO coordinates (MAG)

---> Magnetic field vector component in GEO coordinates data quality (MAG)

---> Deviations from the mean magnetic field magnitude data quality (MAG)

NIV - Neutral Inbound Verified, NIU - Neutral Inbound Unverified, NOV - Neutral Outbound Verified, NOU - Neutral Outbound Unverified

SCP - SpaceCraft Potential available and used as computed by STATIC, SC0 - SpaceCraft potential not available

XYZ-component of spacecraft position in Mars planetocentric (geographic) GEO coordinates

Latitudinal (areodetic) component of MAVEN's location with respect to IAU Mars ellipsoid, equatorial radius of 3396.2 km, polar radius of

Angle measured from MAVEN to the geometric center of the Sun's disc, as described using a horizontal coordinate system

Altitude (areodetic) with respect to IAU Mars ellipsoid, equatorial radius of 3396.2 km, 

XYZ-component of articulated payload platform (app) attitude in GEO coordinates

XYZ-component of pointing direction of Articulated Payload Platform (z-axis of MAVEN_APP_BP frame) in GEO coordinates

XYZ-component of articulated payload platform (app) attitude in MSO coordinates

Orbit number increments each time MAVEN reaches geometric periapsis

Inbound (\'I\') is from geometric apoapsis to next geometric periapsis in time, outbound (\'O\') is the reverse

Martian solar longitude. Ls = 0 (northern spring equinox), Ls = 90 (northern summer solstice), etc.


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