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Histogram of the distances between the multiple terminations of 22 individual ground flashes in Florida. The distances were determined using optical triangulation and thunder ranging.

Это доклад на конференции по молниезащите. Что за "ранжирование грома и молний"?
Перед этим график и глава:

General Characterization of Lightning

About 80% or more of negative cloud-to-ground lightning flashes are composed of two or more strokes. This percentage is appreciably higher than 55% previously estimated by Anderson and Eriksson (1980), based on a variety of less accurate records.

Roughly one-third to one-half of lightning flashes create two or more terminations on ground separated by up to several kilometers.

In order to account for multiple channel terminations on ground, a correction factor of 1.5-1.7 (considerably larger than 1.1 previously estimated by Anderson and Eriksson (1980)) for the ground flash density is needed. Bouquegneau et al. (2012) suggested a conservative value of 2 for lightning risk calculations recommended by the IEC Standard.

Спасибо.