Grid Point #: 002651 
Longitude:  -103.6364
Latitude:     21.4407
Contributing Station, distance (km).
IIEG   86.4
UGEO   88.2
JAGU   88.8
ANIG  101.2
TNAM  106.3
INEG  147.2
IZAC  182.3
IDGO  308.6