MAG/ER data included on this volume consist of a suite of GIF files thatare plots of derived electron and magnetic field observations acquired during the assessment orbits [see: Acuna et al., 1998]. The plots include electron fluxes at 10, 50, 130, 300, and 1000 eV, a color spectrogram of the same data, and magnetic field amplitude and rms, and spacecraft altitude. The numerical data will be released later on MAG/ER archive volumes, after further validation and calibration procedures have been applied.

This data set consists of calibrated, time-ordered, angle-resolved electron flux data from the Electron Reflectometer (ER) instrument on the Mars Global Surveyor (MGS) spacecraft. The primary data consist of time-series tables with descriptive headers. The data set also includes ancillary data (including geometry), documentation, and browse plots.

This data set consists of calibrated, time-ordered, angle-resolved electron flux data from the Electron Reflectometer (ER) instrument on the Mars Global Surveyor (MGS) spacecraft. The primary data consist of time-series tables with descriptive headers. The data set also includes ancillary data (including geometry), documentation, and browse plots.

This data set contains vector magnetic field data acquired by the Fluxgate section of the Magnetometer / Electron Reflectometer instrument aboard the Mars Global Surveyor (MGS) spacecraft. The data are provided at a variable time resolution depending on the telemetry rate available to the investigation for the time period beginning with Aerobraking Phase 1A (1997-09-12). The data in the dataset cover the entire premapping period (ends 1999-03-08).

This data set contains vector magnetic field data acquired by the Fluxgate section of the Magnetometer / Electron Reflectometer instrument aboard the Mars Global Surveyor (MGS) spacecraft. The data are provided at a variable time resolution depending on the telemetry rate available to the investigation for the time period beginning with Aerobraking Phase 1A (1997-09-12). The data in the dataset cover the entire premapping period (ends 1999-03-08).

This data set contains vector magnetic field data acquired by the Fluxgate section of the Magnetometer / Electron Reflectometer instrument aboard the Mars Global Surveyor (MGS) spacecraft. The data are provided at a variable time resolution depending on the telemetry rate available to the investigation for the time period beginning with Aerobraking Phase 1A (1997-09-12). The data in the dataset cover the entire premapping period (ends 1999-03-08).

This data set contains vector magnetic field data acquired by the Fluxgate section of the Magnetometer / Electron Reflectometer instrument aboard the Mars Global Surveyor (MGS) spacecraft. The data are provided at a variable time resolution depending on the telemetry rate available to the investigation for the time period beginning with Aerobraking Phase 1A (1997-09-12). The data in the dataset cover the entire premapping period (ends 1999-03-08).

This data set contains vector magnetic field data acquired by the Fluxgate section of the Magnetometer / Electron Reflectometer instrument aboard the Mars Global Surveyor (MGS) spacecraft. The data are provided at a variable time resolution depending on the telemetry rate available to the investigation for the time period beginning with the prime mission mapping (1999-03-08). The data in the dataset cover the entire mapping time period.

This data set contains vector magnetic field data acquired by the Fluxgate section of the Magnetometer / Electron Reflectometer instrument aboard the Mars Global Surveyor (MGS) spacecraft. The data are provided at a variable time resolution depending on the telemetry rate available to the investigation for the time period beginning with the prime mission mapping (1999-03-08). The data in the dataset cover the entire mapping time period.

This data set contains archival results from radio science investigations conducted during the Mars Global Surveyor (MGS) mission. Radio measurements were made using the MGS spacecraft and Earth-based stations of the NASA Deep Space Network (DSN). The data set includes high-resolution spherical harmonic models of Mars' gravity field generated by groups at the Jet Propulsion Laboratory and Goddard Space Flight Center, covariance matrices for some models, and maps for some models; these results were derived from raw radio tracking data. Also included are profiles of atmospheric temperature and pressure and ionospheric electron density, derived from phase measurements collected during radio occultations. The data set also includes analyses of transient surface echoes observed close to occultations during the first few years of MGS operations. The atmospheric and surface investigations were conducted by Radio Science Team members at Stanford University. The data set also includes 93 line-of-sight acceleration profiles derived at JPL from radio tracking data collected near periapsis while Mars Global Surveyor was in its Science Phasing Orbit and below its nominal Mapping altitude of 400 km. The data were delivered to PDS in approximately chronological order at the rate of one CD-WO volume (typically 100 MB) every three months.