PDS_VERSION_ID = PDS3 DATA_SET_ID = "LP-L-ER-3-RDR-3DELEFLUX-80SEC-V1.0" PRODUCT_ID = "3D990630" PRODUCT_TYPE = "DATA" PRODUCT_VERSION_ID = "V1.0-01" PRODUCT_CREATION_TIME = 2003-07-22 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 1591 FILE_RECORDS = 15405 START_TIME = 1999-06-30T00:00:22 STOP_TIME = 1999-07-01T00:00:48 SPACECRAFT_CLOCK_START_COUNT = "UNK" SPACECRAFT_CLOCK_STOP_COUNT = "UNK" INSTRUMENT_HOST_NAME = "LUNAR PROSPECTOR" INSTRUMENT_HOST_ID = "LP" MISSION_PHASE_NAME = "MAPPING PHASE 2" TARGET_NAME = "MOON" INSTRUMENT_NAME = "ELECTRON REFLECTOMETER" INSTRUMENT_ID = "ER" NOTE = " 1-day ASCII table of Lunar Prospector omni-directional 3-D electron flux data." DESCRIPTION = " The Lunar Prospector omni-directional 3-D electron flux data are provided as ASCII tables of 1 day duration. Each set of 15 consecutive records contains data accumulated over 16 spacecraft spins so that a full 3-D spectrum can be produced as the detector spins and steps. A record in the table consists of the following elements: a time tag in PDS format, pertaining to a single record; a time tag in seconds since epoch 1970, pertaining to an entire spectrum made up of 15 records; the energy bin for the record; the spectrum number for the spectrum (starting with 1 at the beginning of the file); 3 magnetic field components; and then a structure of 88 flux values and 88 phi values. Table Structure: PDS_time (A19) time (1X, F15.0) energy (1X, F9.3), spec_no (1X, I4, 1X) MagFieldDespunSCCoords 3(F13.6, 1X), ele_flux 88(1X, E9.3) phi 88(1X, F6.2) The ASCII record delimiter characters carriage return and line feed occur at the end of each record. In addition, there is a file THETA.TAB that gives the inclination angle (theta) for each detector step as the instrument cycles. These are fixed. There is one theta value associated with each of the eighty-eight energy flux values. THETA.TAB is an ASCII table with one row and eighty-eight columns." ^TABLE = "3D990630.TAB" OBJECT = TABLE INTERCHANGE_FORMAT = ASCII ROWS = 15405 COLUMNS = 9 ROW_BYTES = 1591 OBJECT = COLUMN NAME = "Time" COLUMN_NUMBER = 1 UNIT = "N/A" DATA_TYPE = TIME START_BYTE = 1 BYTES = 19 DESCRIPTION = " This column contains spacecraft event time (SCET), in PDS format, for the record. This was calculated by incrementing the SCET for the whole 15-record spectrum (column 2) with a time increment calculated from the approximate spin rate of the spacecraft." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Spectrum Time" COLUMN_NUMBER = 2 UNIT = "second" DATA_TYPE = ASCII_REAL TIME_FORMAT = "%FSEC%" REFERENCE_EPOCH = "1970-01-01T00:00:00.000Z" REFERENCE_LEAPSECONDS = NO START_BYTE = 21 BYTES = 15 MISSING_CONSTANT = 99999999999999. DESCRIPTION = " This column contains spacecraft event time (SCET) of the center of the 5 second averaging window for the first record in a spectrum. Averages are non-overlapping. The time format is given in seconds after 00:00:00 UT on Jan 1, 1970. Leap seconds are not accounted for in this time format. Each day is assumed to have 86400.0 seconds and years have either 365 or 366 days. This time column is native to the data; column 1 was calculated from it." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Energy Bin" COLUMN_NUMBER = 3 UNIT = "ELECTRON VOLTS" DATA_TYPE = ASCII_REAL START_BYTE = 37 BYTES = 9 MISSING_CONSTANT = 99999.999 DESCRIPTION = "Center energy value of the data channel." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Spectrum Number" COLUMN_NUMBER = 4 UNIT = "N/A" DATA_TYPE = ASCII_INTEGER START_BYTE = 47 BYTES = 4 DESCRIPTION = "Ordinal number of spectrum, starting with 1 at the beginning of the file. A spectrum is a group of 15 consecutive records, with each record representing a sweep at a different energy." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Bx" COLUMN_NUMBER = 5 UNIT = "nT" DATA_TYPE = ASCII_REAL START_BYTE = 52 BYTES = 13 MISSING_CONSTANT = 999999.999999 DESCRIPTION = "Magnetic field component along the S/C X-axis." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "By" COLUMN_NUMBER = 6 UNIT = "nT" DATA_TYPE = ASCII_REAL START_BYTE = 66 BYTES = 13 MISSING_CONSTANT = 999999.999999 DESCRIPTION = "Magnetic field component along the S/C Y-axis." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Bz" COLUMN_NUMBER = 7 UNIT = "nT" DATA_TYPE = ASCII_REAL START_BYTE = 80 BYTES = 13 MISSING_CONSTANT = 999999.999999 DESCRIPTION = "Magnetic field component along the S/C Z-axis." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Electron Flux" COLUMN_NUMBER = 8 UNIT = "CM**-2 * S**-1 * SR**-1 * eV**-1" DATA_TYPE = ASCII_REAL START_BYTE = 94 BYTES = 880 ITEMS = 88 ITEM_BYTES = 10 MISSING_CONSTANT = 9.999E-99 DESCRIPTION = "88 electron fluxes, one per Phi direction." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "Phi Values" COLUMN_NUMBER = 9 UNIT = "DEGREES" DATA_TYPE = ASCII_REAL START_BYTE = 974 BYTES = 616 ITEMS = 88 ITEM_BYTES = 7 MISSING_CONSTANT = 999.99 DESCRIPTION = "88 Phi values (azimuthal sector centers)." END_OBJECT = COLUMN END_OBJECT = TABLE END