{"@type": "dcat:Dataset", "accessLevel": "public", "accrualPeriodicity": "irregular", "bureauCode": ["026:00"], "contactPoint": {"@type": "vcard:Contact", "fn": "Thomas Morgan", "hasEmail": "mailto:thomas.h.morgan@nasa.gov"}, "description": "Abstract ======== This data set consists of the MESSENGER MASCS UVVS derived data records, also known as DDRs. There are three types of UVVS DDRs: surface, atmosphere, and atmospheric model. There are two surface DDR data products associated with each UVVS observation set: a science header table and a science data table. There are nine atmosphere DDR data products, consisting of three different observation types for each of sodium (Na), calcium (Ca), and magnesium (Mg). There are 3 atmospheric model data products, one each for observations of Na, Ca, and Mg.", "identifier": "urn:nasa:pds:context_pds3:data_set:data_set.mess-e-v-h-mascs-4-uvvs-ddr-v1.0_fsdd-ifc4", "issued": "2021-05-21", "keyword": ["mercury", "messenger"], "landingPage": "https://pds.nasa.gov/ds-view/pds/viewDataset.jsp?dsid=MESS-E%2FV%2FH-MASCS-4-UVVS-DDR-V1.0", "license": "http://www.usa.gov/publicdomain/label/1.0/", "modified": "2025-07-17", "programCode": ["026:005"], "publisher": {"@type": "org:Organization", "name": "National Aeronautics and Space Administration"}, "references": ["https://pds.nasa.gov"], "theme": ["Earth Science"], "title": "MESSENGER E/V/H MASCS 4 UVVS DERIVED DATA V1.0"}