Grid Point #: 013349 
Longitude:   -87.7070
Latitude:     41.0819
Contributing Station, distance (km).
KA18   12.2
INLW   40.1
INRL   48.4
INRN   49.9
CCMK   56.5
ILSH   58.2
ILBU   60.8
WLCI   62.9