| WMO/ICAO ID | Name | MAE | RMSE | BIAS | maxE | minE | Cases |
|---|---|---|---|---|---|---|---|
| United States | 4.38 | 5.77 | -1.67 | 24.5 | -24.7 | 2299 | |
| Alabama | 6.08 | 7.32 | -4.37 | 11.0 | -17.0 | 68 | |
| Alaska | 7.07 | 8.64 | -3.95 | 7.0 | -19.0 | 23 | |
| Arizona | 3.28 | 3.69 | 2.67 | 7.0 | -4.8 | 46 | |
| California | 2.46 | 3.15 | 0.88 | 8.9 | -8.1 | 161 | |
| Colorado | 5.23 | 7.50 | -1.07 | 13.7 | -24.7 | 115 | |
| Connecticut | 4.13 | 5.15 | -2.14 | 9.1 | -11.4 | 23 | |
| Florida | 3.12 | 4.12 | -2.17 | 12.0 | -13.4 | 138 | |
| Idaho | 3.60 | 4.42 | -1.30 | 4.4 | -10.6 | 23 | |
| Illinois | 5.54 | 6.56 | -4.27 | 8.8 | -15.1 | 46 | |
| Indiana | 6.09 | 7.62 | -4.76 | 5.8 | -18.5 | 23 | |
| Iowa | 3.70 | 4.51 | -1.71 | 8.7 | -10.2 | 46 | |
| Kansas | 4.16 | 5.53 | 2.08 | 16.6 | -9.7 | 23 | |
| Kentucky | 5.92 | 7.56 | -5.05 | 4.8 | -17.5 | 46 | |
| Louisiana | 4.49 | 6.00 | -3.39 | 7.3 | -14.2 | 23 | |
| Maine | 4.09 | 5.32 | -0.74 | 12.5 | -11.3 | 46 | |
| Maryland | 5.40 | 6.79 | -3.57 | 15.4 | -12.2 | 23 | |
| Massachusetts | 4.38 | 5.54 | -1.87 | 10.9 | -12.7 | 23 | |
| Michigan | 4.65 | 5.66 | -2.57 | 12.8 | -17.5 | 46 | |
| Minnesota | 3.93 | 5.03 | -2.00 | 10.5 | -13.7 | 46 | |
| Missouri | 4.11 | 5.26 | -3.18 | 12.7 | -10.9 | 46 | |
| Montana | 4.13 | 5.87 | -0.59 | 20.4 | -13.8 | 69 | |
| Nebraska | 4.79 | 6.08 | -0.16 | 15.0 | -10.5 | 20 | |
| Nevada | 3.17 | 4.21 | -0.85 | 8.8 | -11.5 | 46 | |
| New Hampshire | 8.17 | 9.45 | 5.01 | 22.8 | -12.3 | 22 | |
| New Jersey | 4.61 | 5.94 | -2.80 | 13.0 | -12.2 | 46 | |
| New Mexico | 3.66 | 5.60 | -0.01 | 14.2 | -16.7 | 23 | |
| New York | 4.45 | 5.64 | -3.10 | 9.6 | -14.2 | 92 | |
| North Carolina | 4.93 | 6.16 | -1.41 | 13.7 | -14.0 | 69 | |
| North Dakota | 4.10 | 5.47 | 0.54 | 17.5 | -14.5 | 46 | |
| Ohio | 5.64 | 6.95 | -4.30 | 7.7 | -17.3 | 23 | |
| Oklahoma | 4.11 | 5.32 | -0.52 | 8.0 | -15.9 | 46 | |
| Oregon | 2.49 | 3.24 | -1.82 | 3.4 | -8.1 | 23 | |
| Pennsylvania | 5.04 | 6.32 | -3.43 | 9.5 | -14.6 | 46 | |
| South Carolina | 7.02 | 8.27 | -0.45 | 12.6 | -15.2 | 23 | |
| South Dakota | 5.14 | 7.67 | 3.25 | 24.5 | -7.6 | 23 | |
| Tennessee | 5.66 | 6.64 | -4.77 | 3.6 | -13.5 | 46 | |
| Texas | 3.75 | 4.83 | -1.28 | 9.1 | -14.4 | 211 | |
| US State Georgia | 5.55 | 6.77 | -2.55 | 13.7 | -14.2 | 69 | |
| Utah | 4.55 | 6.28 | -3.52 | 8.1 | -16.9 | 23 | |
| Vermont | 5.48 | 6.51 | -3.83 | 6.9 | -13.5 | 23 | |
| Virginia | 5.24 | 6.83 | -2.96 | 18.4 | -16.5 | 115 | |
| Washington | 2.72 | 3.39 | -0.70 | 7.3 | -7.3 | 69 | |
| Wisconsin | 4.93 | 5.95 | -4.72 | 1.3 | -13.6 | 23 | |
| Wyoming | 4.38 | 5.72 | 0.07 | 12.7 | -18.4 | 69 |