Case studies on the performance of commercial-grade lightning event counters

The non-conventional lightning air terminals and their associated commercial-grade lightning event counters were introduced in Malaysia more than three decades ago. These event counters have been widely used to justify the use of the air terminals among users and non-expert engineers. We present case studies of the lightning event counter data and compare them against similar nearby event counter data and to the estimated number of lightning flashes to an air terminal based on the keraunic level.