condition mean min max 0 h after light 18.9654 18.3631 19.5677 2 h after light 12.271049999999999 11.9826 12.5595 4 h after light 11.180299999999999 10.9392 11.4214 8 h after light 15.873 13.4771 18.2689 12 h after light 29.230999999999998 25.3709 33.0911 2 h after dark 30.1467 27.0621 33.2313 4 h after dark 25.53445 23.9655 27.1034 8 h after dark 24.893 23.852 25.934 12 h after dark 19.795 19.3031 20.2869