Grid Point #: 001688 
Longitude:  -100.7590
Latitude:     18.4190
Contributing Station, distance (km).
TNIF  121.1
TNCN  128.7
TNMO  145.4
TOL2  152.4
LZCR  159.1
MRCU  173.0
MXAT  178.5
YAIG  185.0
TNAT  288.8
TNNP  461.3