| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.50 | 5.73 | -0.78 | 20.6 | -18.9 | 2098 | |
| Alabama | 4.89 | 6.07 | -2.98 | 12.1 | -14.7 | 62 | |
| Alaska | 5.76 | 6.96 | -3.02 | 7.8 | -18.9 | 21 | |
| Arizona | 3.88 | 4.54 | 3.02 | 10.9 | -4.1 | 42 | |
| California | 2.80 | 3.38 | 0.23 | 9.7 | -7.2 | 147 | |
| Colorado | 4.58 | 5.83 | -0.42 | 12.1 | -17.1 | 105 | |
| Connecticut | 3.65 | 4.94 | -2.18 | 5.1 | -12.3 | 21 | |
| Florida | 3.80 | 4.64 | -2.96 | 8.3 | -13.6 | 126 | |
| Idaho | 2.65 | 3.31 | -1.51 | 3.9 | -8.9 | 21 | |
| Illinois | 4.20 | 4.88 | -1.45 | 9.7 | -10.7 | 42 | |
| Indiana | 4.61 | 5.42 | -2.42 | 5.9 | -13.9 | 21 | |
| Iowa | 3.85 | 4.92 | 1.28 | 11.5 | -11.7 | 42 | |
| Kansas | 4.84 | 6.09 | 3.82 | 15.4 | -4.4 | 21 | |
| Kentucky | 4.94 | 6.04 | -2.81 | 8.8 | -15.1 | 42 | |
| Louisiana | 4.37 | 6.29 | 0.25 | 20.5 | -10.4 | 21 | |
| Maine | 3.95 | 4.67 | -1.66 | 8.3 | -9.5 | 42 | |
| Maryland | 4.79 | 5.76 | -2.91 | 5.2 | -12.9 | 21 | |
| Massachusetts | 4.05 | 5.18 | -2.06 | 6.6 | -10.7 | 21 | |
| Michigan | 3.37 | 4.12 | -0.46 | 8.4 | -8.9 | 42 | |
| Minnesota | 4.14 | 5.03 | -0.38 | 9.6 | -14.1 | 42 | |
| Missouri | 4.20 | 5.41 | 0.59 | 12.3 | -12.0 | 42 | |
| Montana | 6.46 | 7.88 | -0.71 | 19.4 | -15.8 | 63 | |
| Nebraska | 5.51 | 7.02 | 3.53 | 14.7 | -6.0 | 18 | |
| Nevada | 3.41 | 4.37 | -1.51 | 5.5 | -11.2 | 42 | |
| New Hampshire | 7.51 | 8.45 | 4.17 | 18.0 | -7.5 | 21 | |
| New Jersey | 4.58 | 5.77 | -2.75 | 5.6 | -12.5 | 42 | |
| New Mexico | 3.66 | 4.30 | 1.69 | 11.3 | -6.6 | 21 | |
| New York | 4.31 | 5.66 | -3.08 | 6.8 | -14.8 | 84 | |
| North Carolina | 5.09 | 6.13 | -2.61 | 9.3 | -13.5 | 63 | |
| North Dakota | 5.21 | 6.24 | 0.07 | 11.5 | -11.1 | 42 | |
| Ohio | 4.67 | 5.45 | -2.97 | 7.3 | -10.9 | 21 | |
| Oklahoma | 6.13 | 7.67 | 3.77 | 19.4 | -8.6 | 42 | |
| Oregon | 3.05 | 3.87 | -2.03 | 3.8 | -7.5 | 21 | |
| Pennsylvania | 4.72 | 5.71 | -2.66 | 8.2 | -13.1 | 42 | |
| South Carolina | 4.94 | 5.95 | -2.87 | 5.6 | -13.6 | 21 | |
| South Dakota | 6.67 | 7.85 | 3.78 | 16.4 | -10.9 | 21 | |
| Tennessee | 4.67 | 6.24 | -1.12 | 16.0 | -13.5 | 42 | |
| Texas | 5.12 | 6.97 | 2.68 | 20.6 | -13.3 | 191 | |
| US State Georgia | 5.12 | 6.24 | -3.78 | 7.2 | -14.7 | 63 | |
| Utah | 4.17 | 5.23 | -3.98 | 2.0 | -11.9 | 21 | |
| Vermont | 4.80 | 5.73 | -4.05 | 5.7 | -13.2 | 21 | |
| Virginia | 4.83 | 5.91 | -2.83 | 10.6 | -15.1 | 105 | |
| Washington | 2.97 | 3.55 | -0.12 | 8.8 | -7.7 | 63 | |
| Wisconsin | 4.43 | 5.19 | -1.96 | 7.1 | -10.7 | 21 | |
| Wyoming | 5.82 | 6.90 | 0.18 | 12.1 | -13.7 | 63 |