| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.72 | 6.10 | -1.23 | 29.7 | -19.6 | 2093 | |
| Alabama | 4.44 | 5.29 | -3.37 | 9.2 | -10.4 | 62 | |
| Alaska | 5.00 | 6.59 | -3.18 | 7.9 | -19.6 | 21 | |
| Arizona | 2.46 | 3.23 | -1.24 | 4.1 | -9.4 | 42 | |
| California | 2.96 | 3.69 | -1.47 | 8.6 | -12.6 | 147 | |
| Colorado | 5.51 | 6.84 | -2.12 | 16.8 | -15.8 | 105 | |
| Connecticut | 3.27 | 4.10 | -2.02 | 4.4 | -9.2 | 21 | |
| Florida | 4.09 | 5.16 | -3.53 | 7.1 | -13.7 | 125 | |
| Idaho | 2.80 | 3.33 | -1.83 | 3.7 | -6.5 | 21 | |
| Illinois | 3.62 | 4.30 | -1.38 | 7.5 | -8.2 | 42 | |
| Indiana | 4.39 | 5.40 | -2.47 | 8.4 | -11.2 | 21 | |
| Iowa | 3.79 | 4.69 | 0.81 | 12.3 | -8.1 | 42 | |
| Kansas | 6.32 | 7.29 | 0.70 | 12.0 | -12.1 | 21 | |
| Kentucky | 4.76 | 5.84 | -2.75 | 8.5 | -14.1 | 42 | |
| Louisiana | 4.15 | 6.07 | -0.90 | 18.6 | -9.2 | 21 | |
| Maine | 2.83 | 3.49 | -1.68 | 6.6 | -7.5 | 42 | |
| Maryland | 5.28 | 6.25 | -2.31 | 9.1 | -11.9 | 21 | |
| Massachusetts | 2.87 | 3.65 | -1.35 | 5.0 | -7.4 | 21 | |
| Michigan | 3.49 | 4.45 | -1.52 | 6.9 | -10.5 | 42 | |
| Minnesota | 4.12 | 5.27 | -0.68 | 10.4 | -14.2 | 42 | |
| Missouri | 5.01 | 6.51 | 0.39 | 14.6 | -14.9 | 42 | |
| Montana | 6.75 | 8.60 | 1.00 | 24.2 | -14.7 | 62 | |
| Nebraska | 4.89 | 6.43 | 2.30 | 14.5 | -5.6 | 18 | |
| Nevada | 4.04 | 5.11 | -3.25 | 6.8 | -11.6 | 42 | |
| New Hampshire | 6.94 | 8.07 | 5.12 | 16.9 | -5.9 | 21 | |
| New Jersey | 4.10 | 5.10 | -2.11 | 8.8 | -13.0 | 41 | |
| New Mexico | 4.53 | 5.66 | -0.81 | 10.0 | -13.8 | 21 | |
| New York | 3.73 | 4.63 | -2.28 | 7.3 | -12.3 | 83 | |
| North Carolina | 6.64 | 7.82 | -3.95 | 10.0 | -17.9 | 63 | |
| North Dakota | 4.94 | 5.59 | -1.62 | 7.6 | -13.9 | 42 | |
| Ohio | 3.85 | 4.74 | -2.60 | 7.1 | -9.8 | 21 | |
| Oklahoma | 6.62 | 8.96 | 3.05 | 29.7 | -11.7 | 42 | |
| Oregon | 3.46 | 3.97 | 0.00 | 6.0 | -6.5 | 21 | |
| Pennsylvania | 4.31 | 5.40 | -2.38 | 8.9 | -13.8 | 42 | |
| South Carolina | 5.77 | 6.62 | -3.54 | 6.3 | -12.9 | 21 | |
| South Dakota | 7.58 | 8.73 | 3.10 | 17.2 | -11.2 | 21 | |
| Tennessee | 5.43 | 7.13 | -1.92 | 14.2 | -16.7 | 42 | |
| Texas | 6.18 | 8.19 | 2.24 | 27.5 | -13.7 | 191 | |
| US State Georgia | 5.38 | 6.41 | -4.43 | 7.3 | -14.1 | 62 | |
| Utah | 4.22 | 5.29 | -4.05 | 1.8 | -12.7 | 21 | |
| Vermont | 4.23 | 5.27 | -3.71 | 4.5 | -12.2 | 21 | |
| Virginia | 5.61 | 6.82 | -2.48 | 11.2 | -14.7 | 105 | |
| Washington | 3.79 | 4.34 | 0.14 | 9.4 | -9.0 | 63 | |
| Wisconsin | 3.44 | 4.05 | -1.58 | 6.0 | -8.2 | 21 | |
| Wyoming | 5.84 | 7.31 | 1.37 | 15.8 | -14.5 | 63 |