condition mean min max 0 h after light 17.1771 14.8014 19.5528 2 h after light 7.710800000000001 7.3867 8.0349 4 h after light 6.51581 6.33525 6.69637 8 h after light 7.4857700000000005 5.93519 9.03635 12 h after light 13.15915 11.2175 15.1008 2 h after dark 11.281369999999999 9.89204 12.6707 4 h after dark 11.1904 10.7081 11.6727 8 h after dark 18.451099999999997 17.9367 18.9655 12 h after dark 18.964750000000002 18.1147 19.8148