condition mean min max 4 h after light 17.592950000000002 16.9836 18.2023 8 h after light 15.47125 14.9008 16.0417 12 h after light 17.910449999999997 17.3175 18.5034 4 h after dark 17.1712 16.4336 17.9088 8 h after dark 22.052149999999997 20.5904 23.5139 12 h after dark 20.9792 20.5389 21.4195