condition mean min max 4 h after light 29.0 29.0 29.0 8 h after light 3.65 2.2 5.1 12 h after light 13.45 8.2 18.7 4 h after dark 5.75 4.0 7.5 8 h after dark 11.5 2.1 20.9 12 h after dark 18.75 1.6 35.9