| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.27 | 5.56 | -2.32 | 25.2 | -22.8 | 2295 | |
| Alabama | 5.65 | 6.78 | -2.64 | 15.4 | -14.0 | 67 | |
| Alaska | 5.96 | 7.10 | -2.80 | 8.9 | -17.5 | 23 | |
| Arizona | 1.71 | 2.13 | -1.03 | 2.6 | -5.6 | 46 | |
| California | 2.41 | 2.89 | -1.39 | 7.2 | -7.6 | 161 | |
| Colorado | 5.60 | 7.50 | -3.99 | 13.8 | -22.8 | 115 | |
| Connecticut | 4.23 | 5.46 | -2.80 | 7.0 | -14.2 | 23 | |
| Florida | 2.08 | 2.80 | -0.75 | 9.0 | -7.9 | 130 | |
| Idaho | 3.69 | 4.65 | -3.44 | 1.7 | -9.5 | 23 | |
| Illinois | 6.48 | 7.45 | -5.72 | 4.4 | -15.0 | 46 | |
| Indiana | 5.44 | 6.98 | -4.61 | 4.3 | -17.3 | 23 | |
| Iowa | 4.43 | 5.17 | -3.89 | 7.2 | -10.7 | 46 | |
| Kansas | 3.11 | 4.08 | -0.19 | 6.0 | -12.5 | 23 | |
| Kentucky | 5.63 | 7.00 | -4.98 | 4.0 | -18.5 | 46 | |
| Louisiana | 4.39 | 5.31 | -0.98 | 10.3 | -9.0 | 23 | |
| Maine | 3.89 | 4.72 | -1.34 | 11.6 | -9.4 | 46 | |
| Maryland | 4.19 | 5.34 | -2.37 | 6.5 | -11.0 | 23 | |
| Massachusetts | 4.26 | 4.96 | -1.84 | 10.0 | -10.8 | 23 | |
| Michigan | 4.49 | 5.42 | -3.41 | 7.0 | -13.8 | 46 | |
| Minnesota | 4.52 | 5.51 | -4.29 | 2.5 | -13.3 | 46 | |
| Missouri | 4.43 | 5.22 | -3.57 | 5.3 | -10.1 | 46 | |
| Montana | 4.31 | 6.07 | -0.57 | 25.2 | -12.2 | 69 | |
| Nebraska | 3.52 | 4.29 | -1.73 | 4.3 | -9.5 | 21 | |
| Nevada | 4.39 | 5.15 | -4.02 | 6.4 | -11.9 | 46 | |
| New Hampshire | 6.28 | 7.82 | 3.50 | 17.4 | -11.9 | 23 | |
| New Jersey | 4.25 | 5.28 | -2.19 | 10.6 | -12.1 | 46 | |
| New Mexico | 4.95 | 6.12 | -4.93 | 0.2 | -17.0 | 23 | |
| New York | 4.86 | 5.99 | -3.12 | 17.4 | -13.7 | 92 | |
| North Carolina | 5.42 | 6.68 | -1.49 | 14.8 | -15.7 | 69 | |
| North Dakota | 3.94 | 4.82 | -1.88 | 12.5 | -8.9 | 46 | |
| Ohio | 5.02 | 6.59 | -4.00 | 5.7 | -18.9 | 23 | |
| Oklahoma | 3.28 | 4.43 | -2.09 | 7.3 | -12.7 | 46 | |
| Oregon | 2.40 | 3.03 | -2.13 | 1.6 | -6.5 | 23 | |
| Pennsylvania | 5.33 | 6.93 | -3.81 | 12.0 | -20.3 | 46 | |
| South Carolina | 5.29 | 6.49 | 1.57 | 16.3 | -9.9 | 23 | |
| South Dakota | 4.49 | 6.21 | 1.72 | 16.9 | -7.2 | 23 | |
| Tennessee | 4.69 | 5.72 | -3.79 | 8.2 | -13.9 | 46 | |
| Texas | 3.79 | 4.97 | -2.01 | 11.3 | -13.3 | 215 | |
| US State Georgia | 4.98 | 5.97 | -0.91 | 15.5 | -10.6 | 68 | |
| Utah | 5.73 | 7.17 | -5.56 | 1.8 | -17.4 | 23 | |
| Vermont | 5.05 | 6.61 | -2.81 | 14.3 | -13.2 | 23 | |
| Virginia | 5.10 | 6.25 | -2.79 | 9.3 | -17.1 | 115 | |
| Washington | 2.22 | 2.94 | -1.09 | 4.1 | -9.0 | 69 | |
| Wisconsin | 5.46 | 6.09 | -4.53 | 3.7 | -10.5 | 23 | |
| Wyoming | 5.32 | 6.87 | -1.03 | 17.8 | -16.9 | 69 |