condition mean min max 4 h after light 3.6 3.6 3.6 8 h after light 11.85 8.5 15.2 12 h after light 25.85 22.8 28.9 4 h after dark 15.05 5.3 24.8 8 h after dark 15.549999999999999 3.9 27.2 12 h after dark 2.0 1.4 2.6