USHCN Iowa raw temperature data alterations

July '09 data download (version 1) vs January '10 download (version 2) from
http://data.giss.nasa.gov/gistemp/station_data/

Component charts generated by NASA, then assembled by Mike McMillan - free usage if unaltered.

All USHCN stations in Iowa are presented here.

Click image for full size chart in new window

Wisconsin stations   Illinois stations