Honolulu case
We complete this survey with two cases where the selected station is at higher magnetic latitude than so far. Figure 12 shows the Honolulu case. The bulk of Honolulu’s detections are for strokes whose predicted logarithmic reference transmission (to Honolulu) > -2.5 (Figure 12g), with a low tail out to -4, as had been the case with Atuona. For the nighttime cohort of strokes (Figures 12d,e), Honolulu detects very few strokes in South America, whilst its more distant detections on the West go all the way across India. The Honolulu patterns of detection/non-detection are grossly consistent with the model predictions (Figures 12c,f,g).