The math behind the “Effectivity L”

[cutty]

You are missing at least one additional factor involved in the math...
min (Strikes / Signals(s), Signals(s) / Strikes)  
...but please note:
These calculations for the Stations listing on both
the Blitzortung  website and Lightningmaps.org
 are discussed and debated (extensively) 
at
https://forum.blitzortung.org/showthread.php?tid=1261


Note also that the 'effectivity' figures on the Stations pages
use a different 'computation' than the 'efficiency' number on
the stations network efficiency table at Lightningmaps.org....

Cheers!
Mike