condition mean min max 4 h after light 38.4 38.4 38.4 8 h after light 36.25 19.9 52.6 12 h after light 32.8 20.0 45.6 4 h after dark 60.25 35.6 84.9 8 h after dark 79.6 78.1 81.1 12 h after dark 79.25 77.5 81.0