condition mean min max 4 h after light 11.8506 10.885 12.8162 8 h after light 10.85075 10.8484 10.8531 12 h after light 10.7713 10.5636 10.979 4 h after dark 13.1235 13.1162 13.1308 8 h after dark 13.5688 13.2614 13.8762 12 h after dark 12.9741 12.9306 13.0176