The telemtry.dat file contains a list of all of the telemetry stations that are assumed available during the observations for which the - coverage plots are calculated. The format of this file is consists of the station name, elevation, latitude, and longitude. The elevation is given in meters and is either the distance from the center of the earth or the elevation above sea level. The latitude and longitude are listed in degrees, with the longitude given as a value between and +180 (positive to the west of Greenwich and negative to the east). And END statement follows the last station listed and functions in the same way as given above.