condition mean min max 0 h after light 8.02628 7.92757 8.12499 4 h after light 10.88222 8.77814 12.9863 8 h after light 20.2195 19.9262 20.5128 4 h after dark 13.234100000000002 12.2178 14.2504 8 h after dark 13.390550000000001 13.0328 13.7483 12 h after dark 6.610115 5.24241 7.97782