This [1] is the best I could find with a quick search, admittedly far from ideal, but it has some numbers to start with and might help to locate better data. [

This [1] is the best I could find with a quick search, admittedly far from ideal, but it has some numbers to start with and might help to locate better data. [1] https://www.independent.co.uk/news/science/it-safe-take-shower-during-thunderstorm-9966031.html https://www.independent.co.uk/news/science/it-safe-take-show...