Rain threshold setting (for setting the current conditions icon)

The setting panel for the rain threshold naming contains a set of thresholds for light/moderate/heavy etc. rain. Are these thresholds given in mm/h or mm/min ?
Is there any detailed description how to adjust these settings? I did use a search feature but didn’t find any explanation.
Thank you.

Anyone knows this one perhaps?

Hi,
AFAIK the thresholds are determined by the amount of rain that has fallen within the number of minutes set for “minutes to check back for rain to set icon” on the thresholds screen.
Cheers

http://discourse.weather-watch.com/p/116580