area (sq. miles) | county count | state count | span (miles) | span center | span end 1 | span end 2 | FGR (miles) | center county and point | county 1 and point | county 2 and point | county 3 and point |
1 | 20996 | 1 | 8 | 1 | 2 | 1 | 458 | Stillwater-MT (45.76, 109.41) | Johnson-WY (43.50, 106.02) | Lewis and Clark-MT (47.92, 113.09) | 28 | Broadwater-MT (46.51, 111.71) | Powell-MT (46.52, 112.29) | Gallatin-MT (46.19, 111.35) | Cascade-MT (46.91, 111.70) |
2 | 14199 | 2 | 2 | 2 | 1 | 2 | 176 | Fremont-WY (42.94, 109.03) | Fremont-WY (44.01, 110.05) | Fremont-WY (42.26, 107.52) | 47 | Fremont-WY (42.95, 109.33) | Hot Springs-WY (43.62, 109.17) | Teton-WY (43.38, 110.06) | Sweetwater-WY (42.26, 109.33) |
3 | 7594 | 2 | 2 | 2 | 1 | 3 | 175 | Blaine-ID (43.70, 114.15) | Blaine-ID (42.62, 113.25) | Custer-ID (44.77, 115.09) | 34 | Custer-ID (44.06, 114.13) | Butte-ID (44.06, 113.46) | Lemhi-ID (44.49, 113.82) | Camas-ID (43.81, 114.70) |
4 | 3794 | 4 | 1 | 2 | 1 | 4 | 92 | Custer-MT (46.30, 105.56) | Custer-MT (46.86, 106.09) | Custer-MT (45.79, 104.94) | 27 | Custer-MT (46.18, 105.58) | Prairie-MT (46.57, 105.45) | Rosebud-MT (46.19, 106.15) | Powder River-MT (45.79, 105.58) |
5 | 2400 | 4 | 1 | 2 | 1 | 5 | 87 | Ravalli-MT (46.06, 114.09) | Ravalli-MT (45.46, 114.34) | Ravalli-MT (46.66, 113.83) | 16 | Ravalli-MT (46.10, 114.13) | Idaho-ID (46.17, 114.44) | Idaho-ID (46.09, 114.46) | Granite-MT (46.05, 113.80) |
6 | 1223 | 4 | 1 | 2 | 1 | 6 | 74 | Shoshone-ID (47.10, 115.14) | Mineral-MT (46.75, 114.55) | Mineral-MT (47.44, 115.75) | 10 | Mineral-MT (47.04, 114.82) | Clearwater-ID (46.92, 114.93) | Missoula-MT (47.14, 114.65) | Shoshone-ID (46.97, 115.00) |