These directories contain DEMS in FLOAT_IMG and JP2 format for +/- 60 degrees in latitude, and 360 degrees in longitude. Resolutions are at 128 and 256 PPD. The 512 PPD product is in the form of tiles that are 30 degrees in latitude and 45 degrees in longitude, and are given here in a parallel directory structure. The raw directory contains Generic Mapping Tools compatible netcdf files from which the products nin FLOAT_IMG and JP2 were constructed.