| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.71 | 6.17 | -1.71 | 23.7 | -22.8 | 2194 | |
| Alabama | 6.05 | 7.34 | -4.66 | 8.6 | -17.5 | 65 | |
| Alaska | 5.72 | 7.09 | -3.31 | 9.1 | -18.8 | 22 | |
| Arizona | 2.61 | 3.68 | -1.22 | 10.2 | -10.8 | 44 | |
| California | 2.53 | 3.13 | -1.56 | 4.8 | -7.4 | 154 | |
| Colorado | 5.69 | 7.30 | -1.91 | 14.1 | -20.5 | 110 | |
| Connecticut | 4.31 | 5.37 | -2.84 | 4.6 | -15.3 | 22 | |
| Florida | 4.38 | 5.93 | -3.50 | 15.5 | -20.8 | 131 | |
| Idaho | 3.13 | 3.58 | -2.53 | 4.5 | -6.2 | 22 | |
| Illinois | 3.96 | 4.79 | -2.73 | 5.8 | -11.8 | 44 | |
| Indiana | 3.91 | 5.20 | -3.45 | 4.2 | -12.0 | 22 | |
| Iowa | 3.42 | 4.18 | 0.35 | 9.1 | -8.3 | 44 | |
| Kansas | 6.57 | 7.94 | 2.71 | 19.2 | -11.8 | 22 | |
| Kentucky | 4.40 | 6.44 | -3.83 | 5.4 | -16.1 | 44 | |
| Louisiana | 5.76 | 6.97 | -3.91 | 11.4 | -13.4 | 22 | |
| Maine | 3.63 | 4.59 | -2.26 | 5.6 | -12.4 | 44 | |
| Maryland | 4.71 | 5.79 | -3.25 | 7.2 | -12.8 | 22 | |
| Massachusetts | 3.84 | 4.67 | -2.18 | 4.3 | -12.4 | 22 | |
| Michigan | 3.95 | 5.35 | -2.63 | 5.9 | -15.6 | 44 | |
| Minnesota | 3.50 | 4.33 | -0.68 | 7.7 | -10.4 | 44 | |
| Missouri | 4.14 | 5.46 | 0.30 | 14.3 | -12.4 | 44 | |
| Montana | 5.41 | 7.17 | 1.52 | 19.0 | -11.1 | 65 | |
| Nebraska | 4.03 | 5.00 | 2.32 | 10.7 | -5.5 | 19 | |
| Nevada | 4.10 | 5.10 | -2.94 | 5.4 | -11.1 | 44 | |
| New Hampshire | 7.67 | 8.31 | 4.64 | 13.5 | -9.2 | 22 | |
| New Jersey | 4.17 | 5.51 | -2.70 | 7.7 | -15.7 | 43 | |
| New Mexico | 5.04 | 6.87 | -1.29 | 13.9 | -17.3 | 22 | |
| New York | 4.02 | 5.39 | -3.05 | 5.8 | -15.6 | 87 | |
| North Carolina | 6.51 | 7.92 | -3.73 | 8.4 | -18.3 | 66 | |
| North Dakota | 3.89 | 4.49 | -0.99 | 7.8 | -9.4 | 44 | |
| Ohio | 4.47 | 5.90 | -3.26 | 6.7 | -15.5 | 22 | |
| Oklahoma | 5.23 | 6.56 | 2.61 | 17.3 | -10.0 | 44 | |
| Oregon | 2.64 | 3.76 | -0.51 | 10.0 | -7.9 | 22 | |
| Pennsylvania | 4.59 | 5.91 | -3.33 | 6.5 | -13.6 | 44 | |
| South Carolina | 6.08 | 7.73 | -3.43 | 11.5 | -17.7 | 22 | |
| South Dakota | 7.36 | 8.57 | 4.95 | 18.8 | -9.6 | 22 | |
| Tennessee | 4.48 | 6.09 | -2.12 | 8.3 | -18.5 | 44 | |
| Texas | 6.12 | 7.86 | -0.09 | 23.7 | -22.3 | 201 | |
| US State Georgia | 6.98 | 8.80 | -5.34 | 11.6 | -22.8 | 65 | |
| Utah | 4.78 | 5.59 | -4.44 | 3.8 | -13.2 | 22 | |
| Vermont | 4.97 | 5.92 | -4.37 | 2.7 | -12.3 | 22 | |
| Virginia | 5.27 | 6.35 | -2.88 | 8.8 | -16.1 | 110 | |
| Washington | 2.80 | 3.44 | 0.23 | 7.9 | -8.4 | 66 | |
| Wisconsin | 4.28 | 5.22 | -2.96 | 4.7 | -13.1 | 22 | |
| Wyoming | 5.43 | 6.71 | 1.66 | 13.3 | -13.7 | 66 |