condition mean min max 0 h after light 52.73865 51.473 54.0043 4 h after light 49.2355 45.3095 53.1615 8 h after light 52.8334 51.9682 53.6986 4 h after dark 54.35045 53.2237 55.4772 8 h after dark 59.13225 58.9499 59.3146 12 h after dark 51.542550000000006 50.6886 52.3965