condition mean min max 0 h after light 45.58395 41.5124 49.6555 4 h after light 31.70665 29.3223 34.091 8 h after light 16.80755 15.3247 18.2904 4 h after dark 22.2541 21.9931 22.5151 8 h after dark 24.20645 23.7985 24.6144 12 h after dark 60.08555 49.6329 70.5382