Grid Point #: 003939 
Longitude:  -112.9388
Latitude:     26.8367
Contributing Station, distance (km).
TNBA  244.8
TNHM  315.7
SA27  316.3
IPAZ  397.6
YESX  431.5
MSD1  521.9
PLCX  582.4
IMIE  662.7