condition mean min max 0 h after light 39.526650000000004 39.4323 39.621 4 h after light 12.863949999999999 11.2545 14.4734 8 h after light 6.523645 5.35813 7.68916 4 h after dark 20.723 20.2263 21.2197 8 h after dark 22.423699999999997 21.3361 23.5113 12 h after dark 31.182850000000002 30.8395 31.5262