urn:nasa:pds:a16xrfs_surface_xray_counts 1.0 1.24.0.0 Product_Bundle 2025 10.17189/dre8-zb75 This volume contains two tables of time-ordered, event count rates acquired by the Apollo 16 X-Ray Fluorescence Spectrometer from 20 April to 24 April 1972 during lunar orbit. The tables include counts for all channels of the three proportional counters (unfiltered, magnesium filter, aluminum filter) and the solar monitor. David R. Williams National Space Science Data Center Producer Abigail Knight Washington University in St. Louis 2025-07-23 1.0 Initial version. 1972-04-20T01:58:00Z 1972-04-24T19:25:00Z Science Raw Apollo 16 Mission urn:nasa:pds:context:investigation:mission.apollo_16 bundle_to_investigation The Apollo 16 Command and Service Module Host urn:nasa:pds:context:instrument_host:spacecraft.a16c is_instrument_host Apollo 16 Command and Service Module X-Ray Fluorescence Spectrometer Instrument urn:nasa:pds:context:instrument:xrfs.a16c is_instrument Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon bundle_to_target urn:nasa:pds:a16xrf:document:dataset_description bundle_to_document urn:nasa:pds:apollodoc:a16doc:a16_psr bundle_to_document Apollo 16 Preliminary Science Report Archive readme.txt 0 1718 7-Bit ASCII Text Carriage-Return Line-Feed urn:nasa:pds:a16xrfs_surface_xray_counts:data Primary bundle_has_data_collection urn:nasa:pds:a16xrfs_surface_xray_counts:document Primary bundle_has_document_collection