Pioneer Venus Orbiter (PVO) Neutral Mass Spectrometer (ONMS) Data Bundle Readme Introduction ============ This document contains information pertaining to the following collections in the Pioneer Venus Orbiter (PVO) Neutral Mass Spectrometer (ONMS) Data Bundle: Ion Max Count Rate Data Collection, Neutral Density 12 Sec Data Collection, Neutral Density High-Res. Data Collection, Superthermal Ion Location Data Collection, Superthermal Oxygen 12 Second Data Collection, Superthermal Oxygen High-Res. Data Collection, Thermal Ion 12 Second Data Collection. This bundle is organized into 8 collections, including: PVO ONMS Ion Max Count Rate Data Collection (urn:nasa:pds:pvo-onms:data-ion-count-12s), PVO ONMS Neutral Density 12 Sec Data Collection (urn:nasa:pds:pvo-onms:data-neu-dens-12s), PVO ONMS Neutral Density High-Res. Data Collection (urn:nasa:pds:pvo-onms:data-neu-dens-highres), PVO ONMS Superthermal Ion Location Data Collection (urn:nasa:pds:pvo-onms:data-supthrm-ion-loc), PVO ONMS Superthermal Oxygen 12 Second Data Collection (urn:nasa:pds:pvo-onms:data-supthrm-oxy-12s), PVO ONMS Superthermal Oxygen High-Res. Data Collection (urn:nasa:pds:pvo-onms:data-supthrm-oxy-highres), PVO ONMS Thermal Ion 12 Second Data Collection (urn:nasa:pds:pvo-onms:data-thrm-ion-12s), PVO ONMS Document Collection (urn:nasa:pds:pvo-onms:document). PDS4 documentation is all XML. There is an XML label for every product in the archive. PVO ONMS Ion Max Count Rate Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) ion count rate data for all Venus orbits (1-5055, 1978-12-05 to 1992-10-07). PVO ONMS Neutral Density 12 Sec Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) neutral density 12 second data for all Venus orbits (3-5055, 1978-12-07 to 1992-10-07). PVO ONMS Neutral Density High-Res. Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) neutral density high res data for all Venus orbits (3-5055, 1978-12-07 to 1992-10-07). PVO ONMS Superthermal Ion Location Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) ion location data for all Venus orbits (1-5055, 1978-12-05 to 1992-10-07). PVO ONMS Superthermal Oxygen 12 Second Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) superthermal oxygen 12 second data for all Venus orbits (3-5055, 1978-12-05 to 1992-10-20) PVO ONMS Superthermal Oxygen High-Res. Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) superthermal oxygen high res data for all Venus orbits (3-5055, 1978-12-05 to 1992-7-20). PVO ONMS Thermal Ion 12 Second Data Collection =============================================================================================== This collection includes Pioneer Venus (PVO) neutral mass spectrometer (ONMS) ion mass and density data for all Venus orbits (1-5055, 1980-03-15 to 1992-09-25. This is a PDS4 archive of the following PDS3 data sets: PVO-V-ONMS-3-NEUTRALDENSITY-HIRES-V1.0 (https://doi.org/10.17189/1519820) PVO-V-ONMS-3-SUPERTHRMLOXYGN-HIRES-V1.0 (https://doi.org/10.17189/1519821) PVO-V-ONMS-4-IONMAXCOUNTRATE-12SEC-V1.0 (https://doi.org/10.17189/1519822) PVO-V-ONMS-4-NEUTRALDENSITY-12SEC-V1.0 (https://doi.org/10.17189/1519823) PVO-V-ONMS-4-SUPERTHRMLOXYGN-12SEC-V1.0 (https://doi.org/10.17189/1519824) PVO-V-ONMS-4-THERMALION-12SEC-V1.0 (https://doi.org/10.17189/1519825) PVO-V-ONMS-5-SUPERTHERMALIONLOC-V1.0 (https://doi.org/10.17189/1519826) These data collections were originally archived under PDS3 in the PV03_0001 volume. Under the PDS3 standard all archives were self contained and could in principle be stored in a single file system (disk, CD-ROM, etc.). PDS4 takes advantage of the network capabilities that allow archives to be distributed. As a result, some of the documents and metadata previously stored in the PDS3 catalog files are no longer maintained locally, but are maintained in a central repository. Those files are referenced by unique PDS logical identifiers that are included in the document collection inventory. Errata ====== An errata file was included with some issues discovered during migration. Every effort has been made to insure that the data are of the best quality available. However, users are encouraged to verify the correctness of the data prior to submitting any publications or other work based on these data and report any issues to PDS/PPI. Contacts ======== For questions or problems regarding this bundle, please contact the PDS Planetary Plasma Interactions Node: Email pds_operator@igpp.ucla.edu