INCREASE IN CURRENT MAGNITUDE WITH HEIGHT
The geometric model predicts an increase in the median value of the stroke current as the height of the line increases. This is illustrated in Fig. 22 where f (Ia) is compared to f (I). More definitively, Fig. 27 shows Dg as a function of the stroke current. Both curves show an increase as the current increases. Thus more high-magnitude strokes were collected than low-magnitude strokes. Therefore the median of the current terminating at the tower should be greater.