condition mean min max 0 h after light 41.891400000000004 35.3983 48.3845 2 h after light 12.59405 11.8204 13.3677 4 h after light 15.18205 13.1434 17.2207 8 h after light 19.5106 17.0599 21.9613 12 h after light 12.19215 11.5276 12.8567 2 h after dark 21.87095 20.7717 22.9702 4 h after dark 28.08455 24.9304 31.2387 8 h after dark 57.28345 56.8956 57.6713 12 h after dark 39.9919 38.3583 41.6255