Lightning Location Logic Question

[DrFX]

1.  When lightning strikes, and many detectors pick it up, is there a max # of stations that the server will use data from to calculate the location?
   
   
2.   I've heard that a station can detect lightning close by, and then I heard the system will not use lightning data for a strike near by, and instead use data from stations hundreds of miles away?
      2.a If you look at the attached station list, it shows stations sorted by closet to furthest for North America, most of them only show lightning hundreds of miles away? Is it possible for the server/station to detect lightning striking near the station?
   

   

I'm hoping someone can provide some insight.




Thank you in advanced.