The power variation plot shows the received power in [dBm] as the complex sum, i.e., taking the phase shift into account, of the contributions of the different ray-paths along the receiver trajectory for the selected transmitter. Example of a power variation plot:
More information and the possibility to update or export the plot can be accessed through the [Update] menu entry of the window, which presents, for instance, a dialog like:
For a receiver of type area or region, the power variation can be visualized as a coverage map.