PDS_VERSION_ID = "PDS3" /* ** FILE FORMAT ** */ FILE_RECORDS = 60 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 132 /* ** GENERAL DATA DESCRIPTION PARAMETERS ** */ PRODUCT_ID = "NS_DDR_NCP_TAB" PRODUCT_VERSION_ID = "V1" PRODUCT_CREATION_TIME = 2013-05-25T19:49:14 PRODUCT_TYPE = "DDR" STANDARD_DATA_PRODUCT_ID = "NS_DDR_NCP" SOFTWARE_NAME = "NS_DDR_GEN" SOFTWARE_VERSION_ID = "1.0" INSTRUMENT_HOST_NAME = "MESSENGER" INSTRUMENT_NAME = "NEUTRON SPECTROMETER" INSTRUMENT_ID = "NS" DATA_SET_ID = "MESS-E/V/H-GRNS-4-NS-DDR-V2.0" MISSION_PHASE_NAME = "MERCURY ORBIT" TARGET_NAME = "MERCURY" SPACECRAFT_CLOCK_START_COUNT = "1/209585068" START_TIME = 2011-03-26T00:00:00 SPACECRAFT_CLOCK_STOP_COUNT = "1/238701865" STOP_TIME = 2012-02-25T23:59:59 ^HEADER = ("NS_DDR_NCP.TAB", 1) ^ASCII_TABLE = ("NS_DDR_NCP.TAB", 19) OBJECT = HEADER HEADER_TYPE = TEXT INTERCHANGE_FORMAT = "ASCII" RECORDS = 18 BYTES = 2376 DESCRIPTION = "The first eighteen records of this file are the header section. The header references information and column headings to improve usability." END_OBJECT = HEADER OBJECT = ASCII_TABLE COLUMNS = 13 INTERCHANGE_FORMAT = ASCII ROW_BYTES = 132 ROWS = 42 DESCRIPTION = "This table contains latitude-binned fast and epithermal count rates, along with simulated count rates for the cases of no hydrogen and for a thick layer of 100 wt percent water ice in all radar bright regions. Each 2 degree wide latitude bin contains the average of the data points that fall within its latitude range." OBJECT = COLUMN NAME = LATITUDE_BIN COLUMN_NUMBER = 1 START_BYTE = 1 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = DEGREE DESCRIPTION = "Latitude in degrees north at the midpoint of a 2-degree wide latitude bin." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EPI_SIM_NO_H COLUMN_NUMBER = 2 START_BYTE = 11 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated epithermal neutron data for the case of no hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EPI_SIM_NO_H_STD COLUMN_NUMBER = 3 START_BYTE = 21 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated epithermal neutron one-sigma uncertainties for the case of no hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EPI_SIM_YES_H COLUMN_NUMBER = 4 START_BYTE = 31 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated epithermal neutron data for the case of 100 wt percent water equivalent hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EPI_SIM_YES_H_STD COLUMN_NUMBER = 5 START_BYTE = 41 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated epithermal neutron one-sigma uncertainties for the case of 100 wt percent water equivalent hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EPI_DATA COLUMN_NUMBER = 6 START_BYTE = 51 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Measured relative epithermal neutron counts." END_OBJECT = COLUMN OBJECT = COLUMN NAME = EPI_STD COLUMN_NUMBER = 7 START_BYTE = 61 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Measured epithermal neutron one-sigma uncertainties." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FAST_SIM_NO_H COLUMN_NUMBER = 8 START_BYTE = 71 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated fast neutron data for the case of no hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FAST_SIM_NO_H_STD COLUMN_NUMBER = 9 START_BYTE = 81 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated fast neutron one-sigma uncertainties for the case of no hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FAST_SIM_YES_H COLUMN_NUMBER = 10 START_BYTE = 91 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated fast neutron data for the case of 100 wt percent water equivalent hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FAST_SIM_YES_H_STD COLUMN_NUMBER = 11 START_BYTE = 101 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Simulated fast neutron one-sigma uncertainties for the case of 100 wt percent water equivalent hydrogen in the radar bright regions." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FAST_DATA COLUMN_NUMBER = 12 START_BYTE = 111 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Measured relative fast neutron counts." END_OBJECT = COLUMN OBJECT = COLUMN NAME = FAST_STD COLUMN_NUMBER = 13 START_BYTE = 121 BYTES = 10 DATA_TYPE = ASCII_REAL UNIT = "COUNTS/SECOND" DESCRIPTION = "Measured fast neutron one-sigma uncertainties." END_OBJECT = COLUMN END_OBJECT = ASCII_TABLE END