Grid Point #: 001787 
Longitude:   -99.9747
Latitude:     18.6349
Contributing Station, distance (km).
TOL2   81.1
MRCU   87.1
YAIG   98.9
MXAT  128.5
TNMO  173.3
TNIF  206.6
TNCN  210.6
TNAT  211.6
LZCR  245.2