| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 3.91 | 5.18 | -1.34 | 18.5 | -28.4 | 2386 | |
| Alabama | 5.11 | 6.59 | -0.23 | 15.0 | -14.2 | 70 | |
| Alaska | 4.03 | 5.36 | -1.89 | 9.9 | -11.8 | 24 | |
| Arizona | 2.40 | 2.89 | 1.91 | 7.6 | -2.9 | 48 | |
| California | 2.00 | 2.46 | 0.16 | 5.9 | -5.1 | 168 | |
| Colorado | 5.09 | 7.13 | -3.14 | 9.8 | -28.4 | 120 | |
| Connecticut | 4.00 | 4.63 | -2.17 | 7.6 | -9.6 | 24 | |
| Florida | 2.21 | 2.99 | -0.01 | 9.2 | -14.1 | 135 | |
| Idaho | 3.49 | 4.92 | -2.84 | 2.5 | -15.5 | 24 | |
| Illinois | 6.42 | 7.44 | -4.78 | 9.0 | -15.2 | 48 | |
| Indiana | 6.03 | 8.06 | -3.28 | 7.4 | -23.1 | 24 | |
| Iowa | 4.77 | 5.86 | -3.84 | 7.7 | -13.4 | 47 | |
| Kansas | 3.69 | 4.67 | 0.62 | 11.4 | -8.0 | 24 | |
| Kentucky | 5.67 | 7.60 | -4.28 | 6.4 | -23.3 | 48 | |
| Louisiana | 4.00 | 4.82 | 0.21 | 10.0 | -8.5 | 24 | |
| Maine | 3.70 | 4.39 | 0.11 | 9.0 | -7.7 | 48 | |
| Maryland | 3.84 | 5.04 | -1.42 | 12.7 | -7.8 | 24 | |
| Massachusetts | 3.04 | 3.72 | -0.81 | 6.3 | -7.6 | 24 | |
| Michigan | 4.26 | 5.26 | -2.59 | 6.5 | -14.4 | 47 | |
| Minnesota | 5.99 | 7.29 | -5.10 | 7.5 | -16.5 | 46 | |
| Missouri | 3.84 | 4.86 | -3.05 | 9.2 | -11.0 | 48 | |
| Montana | 4.17 | 5.11 | -1.54 | 11.2 | -11.7 | 72 | |
| Nebraska | 4.18 | 5.18 | -1.84 | 10.3 | -11.0 | 22 | |
| Nevada | 2.76 | 3.48 | -1.60 | 4.6 | -9.9 | 48 | |
| New Hampshire | 5.50 | 6.41 | 4.40 | 14.1 | -6.9 | 23 | |
| New Jersey | 3.99 | 5.14 | -1.15 | 14.2 | -12.0 | 47 | |
| New Mexico | 2.19 | 2.98 | -0.67 | 3.9 | -9.0 | 24 | |
| New York | 4.10 | 5.08 | -2.20 | 10.7 | -11.3 | 96 | |
| North Carolina | 3.84 | 5.25 | 0.52 | 18.1 | -10.4 | 72 | |
| North Dakota | 3.94 | 4.99 | -2.37 | 7.0 | -13.4 | 47 | |
| Ohio | 4.49 | 6.48 | -3.02 | 6.5 | -18.2 | 24 | |
| Oklahoma | 3.06 | 3.89 | -1.49 | 8.5 | -10.7 | 48 | |
| Oregon | 2.87 | 3.51 | -2.48 | 1.9 | -8.1 | 24 | |
| Pennsylvania | 4.79 | 6.35 | -2.47 | 13.4 | -19.6 | 48 | |
| South Carolina | 3.60 | 4.90 | 2.58 | 14.8 | -3.7 | 24 | |
| South Dakota | 3.88 | 4.62 | -0.23 | 7.1 | -8.9 | 24 | |
| Tennessee | 5.84 | 6.98 | -2.79 | 14.1 | -17.3 | 48 | |
| Texas | 3.65 | 4.73 | -0.23 | 16.5 | -15.8 | 222 | |
| US State Georgia | 3.74 | 4.56 | 0.56 | 10.5 | -9.8 | 72 | |
| Utah | 4.77 | 6.19 | -4.52 | 2.7 | -15.5 | 24 | |
| Vermont | 4.99 | 5.86 | -2.49 | 7.4 | -11.7 | 24 | |
| Virginia | 4.23 | 5.57 | -1.31 | 18.5 | -11.7 | 120 | |
| Washington | 2.67 | 3.29 | -1.10 | 7.5 | -9.4 | 72 | |
| Wisconsin | 5.56 | 6.49 | -4.01 | 9.8 | -12.2 | 24 | |
| Wyoming | 4.17 | 5.23 | -1.94 | 10.3 | -14.6 | 72 |