| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.26 | 5.54 | -2.26 | 24.5 | -21.6 | 2396 | |
| Alabama | 5.11 | 6.24 | -2.59 | 11.2 | -15.3 | 71 | |
| Alaska | 5.60 | 6.85 | -1.87 | 10.8 | -15.8 | 24 | |
| Arizona | 3.10 | 3.59 | -2.50 | 4.5 | -7.1 | 48 | |
| California | 2.10 | 2.63 | -1.44 | 7.3 | -7.3 | 168 | |
| Colorado | 5.50 | 6.87 | -4.14 | 8.1 | -19.4 | 120 | |
| Connecticut | 3.41 | 4.21 | -2.15 | 4.2 | -8.9 | 24 | |
| Florida | 2.86 | 3.86 | -1.14 | 13.0 | -11.1 | 143 | |
| Idaho | 3.57 | 4.42 | -3.22 | 2.1 | -9.9 | 24 | |
| Illinois | 5.20 | 5.87 | -4.23 | 7.9 | -11.0 | 48 | |
| Indiana | 5.08 | 6.40 | -4.85 | 1.4 | -17.0 | 24 | |
| Iowa | 3.50 | 4.20 | -2.85 | 5.5 | -10.0 | 48 | |
| Kansas | 4.78 | 5.63 | -1.34 | 9.2 | -11.4 | 24 | |
| Kentucky | 5.27 | 6.29 | -4.10 | 8.4 | -15.0 | 48 | |
| Louisiana | 4.62 | 5.98 | -2.45 | 10.7 | -15.3 | 24 | |
| Maine | 3.00 | 3.71 | -1.44 | 8.9 | -8.1 | 48 | |
| Maryland | 4.93 | 6.02 | -3.90 | 5.8 | -13.4 | 24 | |
| Massachusetts | 2.83 | 3.54 | -1.15 | 7.3 | -7.2 | 24 | |
| Michigan | 4.23 | 4.98 | -3.64 | 3.7 | -8.9 | 48 | |
| Minnesota | 4.04 | 5.06 | -3.88 | 1.4 | -12.1 | 48 | |
| Missouri | 4.41 | 5.45 | -3.16 | 7.1 | -13.9 | 48 | |
| Montana | 4.52 | 6.15 | 0.61 | 24.5 | -9.9 | 71 | |
| Nebraska | 2.14 | 2.90 | -1.41 | 2.4 | -8.3 | 21 | |
| Nevada | 3.83 | 4.78 | -3.09 | 5.0 | -11.5 | 48 | |
| New Hampshire | 7.07 | 8.35 | 5.98 | 16.3 | -9.3 | 24 | |
| New Jersey | 4.02 | 5.06 | -2.31 | 13.6 | -12.5 | 47 | |
| New Mexico | 4.34 | 5.69 | -3.93 | 2.7 | -15.6 | 24 | |
| New York | 3.86 | 4.92 | -2.58 | 11.1 | -12.4 | 95 | |
| North Carolina | 5.43 | 6.76 | -1.08 | 17.7 | -14.2 | 72 | |
| North Dakota | 4.56 | 5.52 | -3.10 | 8.0 | -13.4 | 48 | |
| Ohio | 4.85 | 6.04 | -3.52 | 4.1 | -15.1 | 24 | |
| Oklahoma | 3.92 | 5.66 | -1.59 | 16.1 | -14.3 | 48 | |
| Oregon | 2.24 | 2.95 | -1.19 | 3.0 | -6.9 | 24 | |
| Pennsylvania | 4.71 | 6.00 | -3.31 | 8.1 | -14.3 | 48 | |
| South Carolina | 5.62 | 7.21 | 1.72 | 15.0 | -13.4 | 24 | |
| South Dakota | 4.71 | 5.89 | 1.38 | 13.6 | -9.4 | 24 | |
| Tennessee | 5.27 | 6.63 | -3.82 | 6.4 | -17.0 | 48 | |
| Texas | 4.70 | 6.30 | -2.64 | 12.6 | -21.6 | 221 | |
| US State Georgia | 5.59 | 6.97 | -1.40 | 19.6 | -15.0 | 71 | |
| Utah | 5.13 | 6.25 | -4.82 | 3.7 | -14.6 | 24 | |
| Vermont | 4.29 | 5.38 | -2.92 | 6.6 | -12.4 | 24 | |
| Virginia | 5.07 | 6.31 | -2.89 | 16.0 | -17.8 | 120 | |
| Washington | 2.66 | 3.54 | -0.58 | 6.1 | -11.7 | 72 | |
| Wisconsin | 5.22 | 5.85 | -4.43 | 6.7 | -11.1 | 24 | |
| Wyoming | 4.74 | 6.52 | -1.44 | 22.0 | -16.5 | 72 |