Grid Point #: 001609 
Longitude:   -99.2672
Latitude:     18.2032
Contributing Station, distance (km).
YAIG   76.3
MRCU   78.3
UCOC   86.1
TOL2  127.5
TNAT  129.8
TNIF  277.7
LZCR  309.1
TNNP  323.4