condition mean min max 4 h after light 30.7 30.7 30.7 8 h after light 11.85 3.4 20.3 12 h after light 12.55 4.8 20.3 4 h after dark 36.0 23.5 48.5 8 h after dark 32.65 14.8 50.5 12 h after dark 18.0 7.2 28.8