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Local time LT (Figure 5)

P2 (4-8 mHz) events occur more frequently at locations close to dawn or dusk but not significantly so. The occurrence rate for P3 (8-16 mHz) events, which shows an opposite trend, is low at dawn and dusk. The P5 events also occur more likely near local noon, and they have a very low occurrence rate at dusk hours. During dusk hours, only the P2 events have a normalized occurrence rate higher than 1. These observations show the same results as in BS1.

Figure 5. Normalized occurrence rates for $P_2, \ldots , P_5$ events at different local times.