Grid Point #: 001788 
Longitude:   -99.7467
Latitude:     18.6349
Contributing Station, distance (km).
MRCU   65.1
TOL2   74.0
YAIG   75.9
TNAT  188.5
TNMO  192.1
TNIF  230.2
LZCR  268.1
TNNP  393.1