condition mean min max 0 h after light 10.6451 10.3506 10.9396 2 h after light 8.452465 7.70408 9.20085 4 h after light 6.843615 6.1768 7.51043 8 h after light 11.7621 10.9258 12.5984 12 h after light 12.61975 12.155 13.0845 2 h after dark 9.08975 8.50256 9.67694 4 h after dark 10.13695 10.0203 10.2536 8 h after dark 13.86995 13.0484 14.6915 12 h after dark 12.28055 10.4617 14.0994