| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.54 | 6.02 | -1.86 | 22.7 | -25.9 | 2286 | |
| Alabama | 6.33 | 7.34 | -3.29 | 12.4 | -15.3 | 67 | |
| Alaska | 6.63 | 8.02 | -3.22 | 10.2 | -18.0 | 23 | |
| Arizona | 2.52 | 2.97 | 2.25 | 6.8 | -1.8 | 46 | |
| California | 2.10 | 2.60 | 0.24 | 5.8 | -6.0 | 161 | |
| Colorado | 5.17 | 7.60 | -2.35 | 13.3 | -25.9 | 115 | |
| Connecticut | 5.95 | 6.96 | -3.40 | 10.5 | -15.6 | 23 | |
| Florida | 2.62 | 3.64 | -0.87 | 9.3 | -13.2 | 130 | |
| Idaho | 3.54 | 4.59 | -1.95 | 4.8 | -12.0 | 23 | |
| Illinois | 6.24 | 7.72 | -5.45 | 9.5 | -16.0 | 46 | |
| Indiana | 6.25 | 8.04 | -4.46 | 6.4 | -19.3 | 23 | |
| Iowa | 4.81 | 5.80 | -3.30 | 10.1 | -11.9 | 45 | |
| Kansas | 4.37 | 5.68 | 1.80 | 12.9 | -10.6 | 23 | |
| Kentucky | 6.54 | 8.02 | -5.72 | 5.0 | -19.0 | 46 | |
| Louisiana | 4.11 | 5.31 | -1.93 | 6.3 | -12.2 | 23 | |
| Maine | 4.72 | 6.22 | -1.07 | 15.9 | -13.2 | 46 | |
| Maryland | 5.06 | 6.32 | -3.08 | 13.3 | -12.0 | 23 | |
| Massachusetts | 5.25 | 6.24 | -1.99 | 10.0 | -12.7 | 23 | |
| Michigan | 5.10 | 6.48 | -2.91 | 15.4 | -15.5 | 45 | |
| Minnesota | 4.96 | 6.12 | -3.39 | 9.9 | -14.5 | 44 | |
| Missouri | 4.78 | 5.76 | -3.83 | 7.0 | -13.4 | 46 | |
| Montana | 3.92 | 5.97 | -0.49 | 22.7 | -14.7 | 69 | |
| Nebraska | 5.18 | 6.10 | -1.90 | 9.9 | -10.8 | 21 | |
| Nevada | 3.18 | 4.10 | -1.79 | 8.3 | -10.0 | 46 | |
| New Hampshire | 6.84 | 8.53 | 3.12 | 18.2 | -16.6 | 22 | |
| New Jersey | 5.18 | 6.58 | -2.87 | 13.8 | -16.7 | 45 | |
| New Mexico | 2.47 | 3.94 | -0.67 | 7.6 | -14.1 | 23 | |
| New York | 5.37 | 6.60 | -3.49 | 9.8 | -19.2 | 92 | |
| North Carolina | 5.87 | 7.48 | -1.13 | 19.0 | -14.9 | 69 | |
| North Dakota | 3.71 | 5.09 | 0.00 | 15.8 | -9.3 | 45 | |
| Ohio | 5.64 | 7.12 | -4.30 | 8.0 | -17.1 | 23 | |
| Oklahoma | 3.88 | 5.22 | -2.04 | 5.6 | -15.9 | 46 | |
| Oregon | 2.34 | 3.10 | -2.05 | 1.5 | -8.0 | 23 | |
| Pennsylvania | 5.64 | 7.26 | -4.14 | 14.2 | -20.4 | 46 | |
| South Carolina | 4.81 | 6.10 | 1.05 | 16.0 | -9.8 | 23 | |
| South Dakota | 4.77 | 6.33 | 2.06 | 17.1 | -8.7 | 23 | |
| Tennessee | 5.65 | 6.63 | -4.66 | 5.4 | -13.4 | 46 | |
| Texas | 3.91 | 4.94 | -1.21 | 12.4 | -13.0 | 212 | |
| US State Georgia | 5.35 | 6.16 | -1.15 | 13.1 | -13.8 | 69 | |
| Utah | 4.93 | 6.82 | -4.21 | 5.8 | -16.4 | 23 | |
| Vermont | 7.18 | 8.65 | -3.71 | 18.2 | -15.8 | 23 | |
| Virginia | 5.72 | 7.17 | -2.80 | 17.6 | -16.7 | 115 | |
| Washington | 2.64 | 3.27 | -0.71 | 6.9 | -8.2 | 69 | |
| Wisconsin | 5.57 | 6.53 | -4.74 | 4.3 | -13.6 | 23 | |
| Wyoming | 5.22 | 7.04 | -0.03 | 20.1 | -20.3 | 69 |