condition mean min max 4 h after light 15.0828 12.1598 18.0058 8 h after light 42.218 41.9339 42.5021 12 h after light 50.530699999999996 49.3125 51.7489 4 h after dark 28.8037 27.4733 30.1341 8 h after dark 23.8 22.2006 25.3994 12 h after dark 21.95695 21.8969 22.017