condition mean min max 0 h after light 9.239355 8.05801 10.4207 4 h after light 11.681899999999999 11.1227 12.2411 8 h after light 6.16952 5.81636 6.52268 4 h after dark 9.592065 7.33843 11.8457 8 h after dark 11.6624 11.2042 12.1206 12 h after dark 10.011125 7.58565 12.4366