PDS_VERSION_ID = PDS3 /* FILE CHARACTERISTICS */ RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 26 FILE_RECORDS = 259200 /* POINTERS TO DATA OBJECTS */ ^TABLE = "NS_EPITHERMAL_020917.TAB" /* DESCRIPTIVE DATA ELEMENTS */ INSTRUMENT_HOST_NAME = "2001 MARS ODYSSEY" INSTRUMENT_NAME = "GAMMA RAY SPECTROMETER" SPACECRAFT_ID = ODY TARGET_NAME = MARS MISSION_PHASE_NAME = MAPPING PRODUCT_CREATION_TIME = 2002-09-17T00:00:00.000Z /* DATA OBJECT DEFINITION */ OBJECT = TABLE NAME = "NS EPITHERMAL NEUTRON FLUX" INTERCHANGE_FORMAT = ASCII ROWS = 259200 ROW_BYTES = 26 COLUMNS = 3 DESCRIPTION = "This table contains data used to generate the epithermal neutron maps in Figures 1 and 2 in Feldman et al., Global Distribution of Neutrons from Mars: Results from Mars Odyssey, Science, 297, 75-78, 2002. The figures are maps of thermal, epithermal, and fast neutron flux measured by the Neutron Spectrometer over the first 25.7 days of mapping." OBJECT = COLUMN COLUMN_NUMBER = 1 NAME = "LONGITUDE" DATA_TYPE = ASCII_REAL FORMAT = "F7.2" UNIT = "DEGREE" BYTES = 7 START_BYTE = 1 DESCRIPTION = "Longitude of center of 0.5 by 0.5 degree area. Values range from 0 to 360, increasing to the east." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 2 NAME = "LATITUDE" DATA_TYPE = ASCII_REAL FORMAT = "F6.2" UNIT = "DEGREE" BYTES = 6 START_BYTE = 10 DESCRIPTION = "Latitude of center of 0.5 by 0.5 degree area." END_OBJECT = COLUMN OBJECT = COLUMN COLUMN_NUMBER = 3 NAME = "EPITHERMAL NEUTRON FLUX" DATA_TYPE = ASCII_REAL FORMAT = "F7.3" UNIT = "COUNTS/SECOND" BYTES = 7 START_BYTE = 18 DESCRIPTION = "Epithermal neutron flux for the given 0.5 by 0.5 degree area, in counts per second." END_OBJECT = COLUMN END_OBJECT = TABLE END