condition mean min max 4 h after light 53.9 53.9 53.9 8 h after light 20.95 11.4 30.5 12 h after light 25.85 17.0 34.7 4 h after dark 19.3 10.1 28.5 8 h after dark 32.4 19.9 44.9 12 h after dark 11.4 9.8 13.0