This product is a small-scale DEM extracted from 1:500,000 scale topographic maps. It is ideally suited for national and multinational areas of interest.
This DEM is stored in Latitude-Longitude coordinates (not in a cartographic projection), in 1 x 1 degree blocks.
The resolution of this product is 3 arcseconds, which means 3 seconds out of the degrees-minutes-seconds Latitude-Longitude coordinate system.