condition mean min max 4 h after light 22.2 22.2 22.2 8 h after light 16.4 12.2 20.6 12 h after light 21.65 8.3 35.0 4 h after dark 22.85 13.0 32.7 8 h after dark 21.15 16.8 25.5 12 h after dark 40.9 21.0 60.8