Grid Point #: 002591 
Longitude:  -103.5029
Latitude:     21.2249
Contributing Station, distance (km).
IIEG   60.4
UGEO   61.1
JAGU   61.6
TNAM   90.5
ANIG  107.3
INEG  144.3
IZAC  195.6
IDGO  335.8