condition mean min max 4 h after light 6.266325 5.70656 6.82609 8 h after light 5.769635 5.18212 6.35715 12 h after light 8.03884 7.19581 8.88187 4 h after dark 10.53095 10.0447 11.0172 8 h after dark 11.436050000000002 10.9448 11.9273 12 h after dark 10.42925 10.0452 10.8133