| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.86 | 6.18 | -1.11 | 21.6 | -22.0 | 2085 | |
| Alabama | 6.02 | 7.52 | -2.99 | 15.2 | -16.9 | 61 | |
| Alaska | 6.13 | 6.92 | -3.02 | 8.4 | -14.8 | 21 | |
| Arizona | 3.26 | 3.92 | 2.53 | 10.1 | -6.6 | 42 | |
| California | 2.43 | 2.95 | -0.24 | 7.1 | -7.8 | 147 | |
| Colorado | 4.76 | 6.22 | -1.09 | 15.8 | -22.0 | 105 | |
| Connecticut | 6.84 | 8.46 | -5.20 | 8.6 | -18.5 | 21 | |
| Florida | 3.65 | 4.84 | -2.40 | 7.9 | -15.4 | 119 | |
| Idaho | 2.87 | 3.80 | -2.17 | 2.5 | -9.6 | 21 | |
| Illinois | 4.85 | 5.77 | -2.08 | 8.3 | -11.4 | 42 | |
| Indiana | 4.94 | 5.64 | -2.38 | 6.4 | -10.0 | 21 | |
| Iowa | 4.63 | 5.62 | 0.82 | 16.4 | -9.6 | 41 | |
| Kansas | 5.85 | 7.31 | 4.75 | 16.0 | -8.2 | 21 | |
| Kentucky | 5.25 | 6.23 | -3.33 | 6.4 | -15.9 | 42 | |
| Louisiana | 4.76 | 6.25 | 0.26 | 17.9 | -8.7 | 21 | |
| Maine | 5.81 | 6.92 | -2.86 | 9.4 | -13.4 | 42 | |
| Maryland | 4.83 | 5.83 | -2.94 | 5.8 | -14.6 | 21 | |
| Massachusetts | 5.53 | 6.71 | -3.00 | 9.5 | -13.3 | 21 | |
| Michigan | 4.43 | 5.47 | -1.20 | 12.9 | -12.5 | 41 | |
| Minnesota | 4.22 | 5.29 | -0.91 | 9.7 | -13.1 | 40 | |
| Missouri | 4.40 | 5.78 | 0.33 | 11.1 | -13.3 | 42 | |
| Montana | 6.48 | 8.00 | -0.79 | 21.6 | -19.1 | 63 | |
| Nebraska | 6.16 | 7.52 | 3.19 | 16.1 | -7.5 | 19 | |
| Nevada | 3.51 | 4.45 | -2.34 | 6.4 | -9.4 | 42 | |
| New Hampshire | 6.77 | 8.64 | 1.24 | 21.1 | -15.5 | 20 | |
| New Jersey | 5.61 | 6.92 | -3.56 | 8.4 | -16.4 | 41 | |
| New Mexico | 2.56 | 3.61 | 1.17 | 10.7 | -6.6 | 21 | |
| New York | 5.66 | 7.05 | -3.97 | 10.7 | -17.1 | 84 | |
| North Carolina | 5.25 | 6.64 | -3.01 | 8.6 | -18.2 | 63 | |
| North Dakota | 5.42 | 6.27 | 0.59 | 12.1 | -8.3 | 41 | |
| Ohio | 5.56 | 6.81 | -2.31 | 12.6 | -13.5 | 21 | |
| Oklahoma | 6.46 | 7.91 | 2.51 | 14.2 | -14.1 | 42 | |
| Oregon | 2.66 | 3.39 | -1.79 | 2.8 | -7.8 | 21 | |
| Pennsylvania | 5.80 | 7.22 | -3.62 | 10.7 | -16.1 | 42 | |
| South Carolina | 5.42 | 6.93 | -2.31 | 10.9 | -15.3 | 21 | |
| South Dakota | 5.62 | 6.62 | 3.66 | 14.1 | -9.6 | 21 | |
| Tennessee | 4.78 | 5.96 | -1.18 | 15.8 | -10.6 | 42 | |
| Texas | 5.33 | 6.80 | 2.39 | 19.1 | -14.0 | 192 | |
| US State Georgia | 5.80 | 7.15 | -3.19 | 11.0 | -16.6 | 63 | |
| Utah | 4.08 | 5.34 | -3.95 | 1.4 | -11.6 | 21 | |
| Vermont | 6.02 | 7.02 | -4.66 | 6.9 | -12.7 | 21 | |
| Virginia | 5.18 | 6.42 | -3.41 | 6.3 | -16.2 | 105 | |
| Washington | 2.97 | 3.57 | -0.36 | 7.1 | -7.4 | 63 | |
| Wisconsin | 4.16 | 4.96 | -1.58 | 6.2 | -10.0 | 21 | |
| Wyoming | 6.34 | 7.21 | 0.72 | 13.0 | -14.7 | 63 |