| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 3.65 | 4.82 | -1.76 | 17.8 | -28.4 | 2396 | |
| Alabama | 4.22 | 5.54 | -0.45 | 15.7 | -10.6 | 70 | |
| Alaska | 3.68 | 4.67 | -2.31 | 7.9 | -10.0 | 24 | |
| Arizona | 1.90 | 2.41 | -1.27 | 3.0 | -7.4 | 48 | |
| California | 2.31 | 2.74 | -1.54 | 6.5 | -6.7 | 168 | |
| Colorado | 5.17 | 7.20 | -4.14 | 12.9 | -28.4 | 120 | |
| Connecticut | 3.63 | 4.51 | -1.67 | 7.1 | -12.2 | 24 | |
| Florida | 1.89 | 2.50 | 0.03 | 7.9 | -8.1 | 136 | |
| Idaho | 4.23 | 5.17 | -4.16 | 0.6 | -14.7 | 24 | |
| Illinois | 5.88 | 6.95 | -4.79 | 9.5 | -14.5 | 48 | |
| Indiana | 4.53 | 6.68 | -3.12 | 4.8 | -20.2 | 24 | |
| Iowa | 4.71 | 5.57 | -3.50 | 5.9 | -13.7 | 48 | |
| Kansas | 2.99 | 3.58 | -0.41 | 7.1 | -8.1 | 24 | |
| Kentucky | 4.91 | 6.69 | -3.76 | 6.0 | -20.2 | 48 | |
| Louisiana | 3.90 | 5.18 | 1.18 | 14.4 | -8.0 | 24 | |
| Maine | 3.37 | 4.00 | -0.37 | 8.0 | -8.3 | 48 | |
| Maryland | 2.42 | 3.05 | -0.96 | 5.9 | -6.2 | 24 | |
| Massachusetts | 2.89 | 3.61 | -0.82 | 6.2 | -9.7 | 24 | |
| Michigan | 3.43 | 4.38 | -2.67 | 5.8 | -13.9 | 48 | |
| Minnesota | 5.38 | 6.31 | -5.25 | 1.5 | -13.6 | 48 | |
| Missouri | 3.77 | 4.49 | -2.70 | 7.1 | -8.8 | 48 | |
| Montana | 3.78 | 4.89 | -1.82 | 10.9 | -16.9 | 72 | |
| Nebraska | 3.26 | 4.07 | -1.37 | 8.6 | -9.2 | 22 | |
| Nevada | 4.13 | 4.58 | -4.05 | 1.1 | -7.7 | 48 | |
| New Hampshire | 5.60 | 6.51 | 4.64 | 12.1 | -4.9 | 24 | |
| New Jersey | 3.43 | 4.16 | -0.92 | 9.5 | -12.0 | 48 | |
| New Mexico | 3.82 | 4.75 | -3.76 | 0.7 | -11.3 | 24 | |
| New York | 3.50 | 4.35 | -1.98 | 7.1 | -14.0 | 96 | |
| North Carolina | 3.63 | 4.67 | -0.26 | 15.5 | -8.7 | 72 | |
| North Dakota | 4.33 | 5.59 | -3.54 | 5.5 | -15.3 | 48 | |
| Ohio | 3.89 | 5.05 | -2.46 | 5.0 | -13.4 | 24 | |
| Oklahoma | 2.61 | 3.38 | -1.92 | 4.7 | -9.0 | 48 | |
| Oregon | 2.76 | 3.37 | -2.58 | 1.0 | -7.8 | 24 | |
| Pennsylvania | 3.71 | 4.65 | -2.46 | 6.3 | -12.2 | 48 | |
| South Carolina | 4.13 | 5.53 | 2.61 | 16.1 | -8.9 | 24 | |
| South Dakota | 3.26 | 4.52 | -0.47 | 10.0 | -9.3 | 24 | |
| Tennessee | 4.71 | 5.65 | -2.50 | 8.6 | -14.2 | 48 | |
| Texas | 3.54 | 4.80 | -0.64 | 17.8 | -14.5 | 225 | |
| US State Georgia | 3.47 | 4.52 | 0.53 | 13.5 | -9.8 | 71 | |
| Utah | 5.70 | 7.08 | -5.59 | 1.4 | -17.8 | 24 | |
| Vermont | 3.86 | 4.97 | -1.73 | 12.5 | -10.2 | 24 | |
| Virginia | 3.36 | 4.31 | -1.45 | 13.1 | -10.1 | 120 | |
| Washington | 2.24 | 2.80 | -1.51 | 4.6 | -6.9 | 72 | |
| Wisconsin | 5.55 | 6.31 | -3.93 | 8.5 | -12.0 | 24 | |
| Wyoming | 4.45 | 5.84 | -2.05 | 17.7 | -15.3 | 72 |