urn:nasa:pds:vl_rocks:data_derived:vl2norml 1.0 1.21.0.0 Product_Observational 2024-04-03 1.0 Initial PDS4 product label 1976-07-20Z 1982-12-31Z Viking Mission urn:nasa:pds:context:investigation:mission.viking data_to_investigation Viking Lander 2 Host urn:nasa:pds:context:instrument_host:spacecraft.vl2 is_instrument_host Camera 1 for VL2 Instrument urn:nasa:pds:context:instrument:cam1.vl2 is_instrument Camera 2 for VL2 Instrument urn:nasa:pds:context:instrument:cam2.vl2 is_instrument Mars Planet urn:nasa:pds:context:target:planet.mars data_to_target vl2norml.csv 1998-05-12T18:00:00 0 PDS DSV 1 This file contains number distribution, area distribution, normalized number distribution, and normalized area distribution for rocks at the Viking Lander 2 site. The table gives number of rocks and their surface area as a function of rock diameter. The far field distribution was adjusted to match the near field distribution at sizes less than 0.25 meters. The values were derived from table vl2surfs.csv. Bin boundaries were set at 1/128th meter and at powers of SQRT(2) larger (0.008, 0.011, ... , 1.000, 1.414 m) 17 Carriage-Return Line-Feed Comma 9 0 diameter 1 ASCII_Real meter The lower rock diameter for the bin. The upper rock diameter is larger by SQRT(2) or, in the case of the largest diameter, is infinite. If diameter is 0.250, the bin will contain rocks with diameters between 0.250 and 0.354 meters; values for cumulative distributions and densities will include all rocks larger than 0.250 meters. number_distribution_per_bin 2 ASCII_Real Number of rocks larger than diameter and smaller than DIAMETER*SQRT(2). number distribution cumulative 3 ASCII_Real Cumulative number of rocks larger than diameter. area_distribution_per_bin 4 ASCII_Real Area covered by rocks in this size range (bin). area_distribution_cumulative 5 ASCII_Real m^2 "Cumulative area covered by rocks of this diameter and larger. number_density_per_bin 6 ASCII_Real Number of rocks larger than diameter and smaller than DIAMETER*SQRT(2), scaled to a one square meter surface area. number density cumulative 7 ASCII_Real Number of rocks of size diameter or larger in a one square meter area of surface. area_density_per_bin 8 ASCII_Real Fraction of area covered by rocks in this size range (bin). area density cumulative 9 ASCII_Real Fraction of area covered by rocks of this diameter and larger.