condition mean min max 4 h after light 10.17063 8.57596 11.7653 8 h after light 10.152125 8.32695 11.9773 12 h after light 14.47345 12.4922 16.4547 4 h after dark 19.630566666666667 18.7674 20.7591 8 h after dark 15.712533333333333 12.7016 17.7669 12 h after dark 14.1377 13.6428 14.5565