Table 5.
r 2 values for correlations among C values assigned to neighbouring regions, including Indiana (Rothrock and Homoya 2005), Chicago (Swink and Wilhelm 1994), Illinois (Taft 1997), Wisconsin (Bernthal and Cochrane 2003) and Michigan (Herman et al. 1997). The Chicago region includes counties in Illinois, Wisconsin, Indiana and Michigan, but we include the C values from the Chicago region because different authors assigned values in each region.
| Chicago | Illinois | Wisconsin | Michigan | |
|---|---|---|---|---|
| Indiana | 0.76 | 0.77 | 0.69 | 0.68 |
| Chicago | 0.86 | 0.68 | 0.67 | |
| Illinois | 0.81 | 0.68 | ||
| Wisconsin | 0.74 |