Grid Point #: 001863 
Longitude:   -99.6449
Latitude:     18.8507
Contributing Station, distance (km).
MRCU   47.4
TOL2   49.2
YAIG   60.8
TNAT  187.1
TNMO  188.4
TNIF  245.8
LZCR  285.9
TNNP  403.3