The image below shows the number of strikes with respect to time the horizontal axis gives the time of day 0:00:00 at the left, 23:55:59 at the right. The vertical axis is the direction towards the lightning discharge. At the top is true north 0 degr. and at the bottom is south, 180 degr. The color of the dots indicate the signal strength.
Radar map indicates the direction of the lightning by placing dots or lines. The signal is represented by the distance between the center and the edge of the yellow circle
The image below shows when the same lightning strike has been observed from two or more sites, the location of the strike is caclulated by tringulation of two ligntning radar sites.