| Description: Provides the value of the angle, measured on the target body surface, between the direction from a ground point to the north pole and the direction from the ground point to the sub-spacecraft point. If the location of the ground point at which the azimuth is measured is not otherwise specified, it is assumed to correspond to the center of the image. The values of this angle increase in a clockwise direction. When a pair of values is given, e.g. (350.0, 10.0), they represent the ordered end-members of a range of ground azimuth values that extends clockwise from the first to the second, modulo 360 degrees. |