There are no arc attribute values outside the appropriate value domains. The presence of spatial indices was also checked. The presence of a BND file was verified. The presence and location of TICS were checked. Point topology present.
Boundary values are appropriate for map projection and map units.
Two unneeded points were dropped, one .PAT item was dropped, and tics were replaced. See process steps for March, 1998. There are no attribute values outside the appropriate domains. This data set contains one center point for each township in Illinois. They are intended for general centering of map labels.