Table 1 Summary Statistics, 1979–2019 | | Observed | Projected | |
|---|
| Mean | Std.Dev. | Mean | Std.Dev. | RMSE | MAE |
|---|
| Indiana |
| Top | 2.421 | 6.320 | 0.471 | 2.089 | 6.453 | 4.907 |
| Average | 2.893 | 6.146 | 0.255 | 2.251 | 6.025 | 4.790 |
| Poor | 3.739 | 6.213 | 0.071 | 2.432 | 6.749 | 5.500 |
| Transitional | 1.742 | 9.298 | 2.424 | 2.789 | 9.323 | 7.164 |
| North |
| Top | 2.504 | 6.707 | 0.212 | 2.354 | 6.247 | 4.831 |
| Average | 2.886 | 6.563 | –0.068 | 2.613 | 6.569 | 5.216 |
| Poor | 3.888 | 7.481 | –0.025 | 3.095 | 7.959 | 6.215 |
| Northeast |
| Top | 2.602 | 7.912 | 0.088 | 2.175 | 7.745 | 5.893 |
| Average | 3.664 | 7.136 | 0.054 | 2.234 | 7.674 | 5.896 |
| Poor | 4.637 | 7.945 | –0.441 | 2.716 | 9.069 | 6.777 |
| West Central |
| Top | 2.386 | 7.175 | 0.462 | 2.252 | 6.861 | 5.315 |
| Average | 2.877 | 7.205 | 0.418 | 2.518 | 6.917 | 5.417 |
| Poor | 3.874 | 7.476 | 0.23 | 2.547 | 7.942 | 6.238 |
| Central |
| Top | 2.087 | 6.578 | 0.173 | 2.711 | 6.461 | 5.048 |
| Average | 2.324 | 6.51 | 0.261 | 2.659 | 6.211 | 5.005 |
| Poor | 3.254 | 6.511 | 0.188 | 2.863 | 6.842 | 5.553 |
| Southwest |
| Top | 2.815 | 8.245 | 0.429 | 1.681 | 8.141 | 5.826 |
| Average | 3.254 | 8.409 | 0.461 | 2.194 | 8.612 | 6.289 |
| Poor | 4.16 | 9.106 | 0.045 | 2.379 | 9.735 | 7.535 |
| Southeast |
| Top | 3.029 | 7.663 | 0.564 | 1.879 | 7.539 | 5.858 |
| Average | 3.334 | 7.403 | 0.679 | 1.891 | 7.435 | 5.977 |
| Poor | 3.789 | 7.818 | 0.668 | 2.255 | 8.134 | 6.597 |