“…In the past decade, lightning location systems have been installed worldwide to monitor lightning activities. Up to date, the lightning location systems are being operated in many countries, including the U.S. [3], [4], U.K. [5], Japan [1], Canada [6], Austria [7], Sweden [8] and Israel [9], etc. These systems collect information of flash location, peak values of discharge current, and number of lightning strokes per flash, etc.…”