PDS_VERSION_ID = PDS3 RECORD_TYPE = FIXED_LENGTH RECORD_BYTES = 80 FILE_RECORDS = 17 INSTRUMENT_HOST_NAME = "VIKING LANDER 1" TARGET_NAME = "MARS" INSTRUMENT_NAME = {"CAMERA 1","CAMERA 2"} DATA_SET_ID = "VL1/VL2-M-LCS-5-ROCKS-V1.0" PRODUCT_ID = "VL0SURFS.TAB" PRODUCT_RELEASE_DATE = 1998-12-31 DESCRIPTION = "This file contains summary statistics on rock distributions at the Viking Lander 1 site according to surface type. The table gives number of rocks and their surface area as a function of rock diameter and surface type. The values were derived from table VL0AXRAT.TAB. This file is the same as VL1SURFS.TAB except that two 'outcrops' have been omitted. Bin boundaries were set at 1/128th meter and at powers of SQRT(2) larger (0.008, 0.011, ... , 1.000, 1.414 m)." PRODUCT_CREATION_TIME = 1998-05-11T18:00:00.000 PRODUCER_FULL_NAME = "RICHARD A. SIMPSON" PRODUCER_INSTITUTION_NAME = "STANFORD UNIVERSITY" PRODUCT_VERSION_TYPE = "PRELIMINARY" ^TABLE = "VL0SURFS.TAB" OBJECT = TABLE NAME = "VL1 ROCK AREAL COVERAGE" ROWS = 17 COLUMNS = 13 ROW_BYTES = 80 ROW_SUFFIX_BYTES = 0 INTERCHANGE_FORMAT = ASCII DESCRIPTION = "The VL0SURFS table contains estimates of surface area covered by rocks at the VL1 landing site as a function of rock diameter and surface type. Rocks were sorted into bins according to DIAMETER, the area covered was estimated, and running sums were computed for three surface types (drift material, far field, and near field). Total area for each surface type at VL1 was: 15.27 square meters (drift material) 57.85 square meters (far field) 10.48 square meters (near field) The inter-rock area in the far field was 56.1745 square meters, where inter-rock was taken to mean area not covered by a rock of DIAMETER 0.25 meters or larger. Inter-rock area in the near field was 10.4240 square meters. Ratio of the total inter-rock area (far field plus near field) to the near field inter-rock area was 6.3890. Each line in the table contains 78 bytes of data followed by an ASCII carriage-return line-feed pair. Fields are delimited by commas, which are not counted in defining either START_BYTE or BYTES." OBJECT = COLUMN NAME = "DIAMETER" COLUMN_NUMBER = 1 DATA_TYPE = ASCII_REAL START_BYTE = 1 BYTES = 6 FORMAT = "F6.3" UNIT = "METER" DESCRIPTION = "The threshold rock diameter for this size bin. Rocks with average diameter smaller than this value are not counted in this row or any of the rows above. Two outcrops have been omitted." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "NROCKS - DRIFT MATERIAL" COLUMN_NUMBER = 2 DATA_TYPE = ASCII_REAL START_BYTE = 8 BYTES = 4 FORMAT = "F4.0" UNIT = "N/A" DESCRIPTION = "Number of rocks larger than DIAMETER that have been added since the count at the next larger diameter." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CUM_NROCKS - DRIFT MATERIAL" COLUMN_NUMBER = 3 DATA_TYPE = ASCII_REAL START_BYTE = 13 BYTES = 4 FORMAT = "F4.0" UNIT = "N/A" DESCRIPTION = "Cumulative number of rocks larger than DIAMETER in the VL1 measured population." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "BIN AREA - DRIFT MATERIAL" COLUMN_NUMBER = 4 DATA_TYPE = ASCII_REAL START_BYTE = 18 BYTES = 6 FORMAT = "F6.4" UNIT = "SQUARE METER" DESCRIPTION = "Area added by the rocks in this bin." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CUMULATIVE AREA - DRIFT MATERIAL" COLUMN_NUMBER = 5 DATA_TYPE = ASCII_REAL START_BYTE = 25 BYTES = 6 FORMAT = "F6.4" UNIT = "SQUARE METER" DESCRIPTION = "Cumulative area covered by rocks with this DIAMETER and larger." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "NROCKS - FAR FIELD" COLUMN_NUMBER = 6 DATA_TYPE = ASCII_REAL START_BYTE = 32 BYTES = 4 FORMAT = "F4.0" UNIT = "N/A" DESCRIPTION = "Number of rocks larger than DIAMETER that have been added since the count at the next larger diameter." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CUM_NROCKS - FAR FIELD" COLUMN_NUMBER = 7 DATA_TYPE = ASCII_REAL START_BYTE = 37 BYTES = 4 FORMAT = "F4.0" UNIT = "N/A" DESCRIPTION = "Cumulative number of rocks larger than DIAMETER in the VL1 measured population." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "BIN AREA - FAR FIELD" COLUMN_NUMBER = 8 DATA_TYPE = ASCII_REAL START_BYTE = 42 BYTES = 6 FORMAT = "F6.4" UNIT = "SQUARE METER" DESCRIPTION = "Area added by the rocks in this bin." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CUMULATIVE AREA - FAR FIELD" COLUMN_NUMBER = 9 DATA_TYPE = ASCII_REAL START_BYTE = 49 BYTES = 6 FORMAT = "F6.4" UNIT = "SQUARE METER" DESCRIPTION = "Cumulative area covered by rocks with this DIAMETER and larger." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "NROCKS - NEAR FIELD" COLUMN_NUMBER = 10 DATA_TYPE = ASCII_REAL START_BYTE = 56 BYTES = 4 FORMAT = "F4.0" UNIT = "N/A" DESCRIPTION = "Number of rocks larger than DIAMETER that have been added since the count at the next larger diameter." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CUM_NROCKS - NEAR FIELD" COLUMN_NUMBER = 11 DATA_TYPE = ASCII_REAL START_BYTE = 61 BYTES = 4 FORMAT = "F4.0" UNIT = "N/A" DESCRIPTION = "Cumulative number of rocks larger than DIAMETER in the VL1 measured population." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "BIN AREA - NEAR FIELD" COLUMN_NUMBER = 12 DATA_TYPE = ASCII_REAL START_BYTE = 66 BYTES = 6 FORMAT = "F6.4" UNIT = "SQUARE METER" DESCRIPTION = "Area added by the rocks in this bin." END_OBJECT = COLUMN OBJECT = COLUMN NAME = "CUMULATIVE AREA - NEAR FIELD" COLUMN_NUMBER = 13 DATA_TYPE = ASCII_REAL START_BYTE = 73 BYTES = 6 FORMAT = "F6.4" UNIT = "SQUARE METER" DESCRIPTION = "Cumulative area covered by rocks with this DIAMETER and larger." END_OBJECT = COLUMN END_OBJECT = TABLE END