condition mean min max 3 h after light 9.43918 7.57568 11.1131 6 h after light 10.129286666666665 7.63356 11.8302 9 h after light 12.1486 10.5374 13.491 12 h after light 13.7334 12.3569 15.782 3 h after dark 20.2155 18.763 22.2171 6 h after dark 19.921 17.7307 24.0497 9 h after dark 16.8696 14.2159 20.651 12 h after dark 11.67792 7.03386 16.9867