The ATCi look angles chart indicates a list of available satellites for a given set of site coordinates. Domestic Simulsat site locations are set up to view from 69° W to 139° W satellite longitude. For International locations the customer must decide which portion of the view arc they wish to view. For Simulsat-5 and C/Ku antennas the customer will choose any continuous 70° of arc that is obtainable for that site and 75° of continuous arc for the Simulsat-7.