condition mean min max 4 h after light 30.7 30.7 30.7 8 h after light 30.35 28.9 31.8 12 h after light 18.5 5.7 31.3 4 h after dark 18.8 7.5 30.1 8 h after dark 8.05 7.5 8.6 12 h after dark 24.65 4.0 45.3