urn:nasa:pds:clementine1_gravity_and_topography:topography_data:topogrd1 1.0 1.19.0.0 Product_Observational 2023-02-13 1.0 PDS4 migrated product. Deep Space Program Science Experiment Mission urn:nasa:pds:context:investigation:mission.deep_space_program_science_experiment data_to_investigation Clementine 1 Clementine 1 Host urn:nasa:pds:context:instrument_host:spacecraft.clem1 is_instrument_host LIDAR High-Resolution Imager Instrument urn:nasa:pds:context:instrument:clem1.lidar is_instrument Moon Satellite urn:nasa:pds:context:target:satellite.earth.moon data_to_target urn:nasa:pds:clementine1_gravity_and_topography:topography_map:topogrd1_img data_to_associate topogrd1.dat 6480 This file contains a digital, 1 X 1 degree resolution grid of the topography of the Moon relative to a spheroid of radius 1738 km at the equator, with a flattening of 1/3234.93. The data are interpolated from the filtered observations by the 'blockmean and surface programs' of the GMT-system of Wessel and Smith (EOS, Transactions American Geophysical Union, v. 72, p. 441-446, 1991). It is a 360 x 180 grid from 89.5 to -89.5 degrees latitude, and 0.5 to 359.5 degrees longitude. No attempt has been made to provide data at the poles (i.e. beyond about 78 degrees), since the numbers are unconstrained. The observation is topography in meters. The file contains 180 blocks of 36 records each, with each record containing 10 topography values plus an ASCII carriage- return line-feed pair as a delimiter. The first block contains values at -89.5 latitude; the first value in the first record is the topography at (-89.5, 0.5). 0 7-Bit ASCII Text This is a 2-D grid of the topography of the Moon in meters Carriage-Return Line-Feed topogrd1.lbl 0 PDS3 Original PDS3 label Carriage-Return Line-Feed