condition mean min max 4 h after light 47.8 47.8 47.8 8 h after light 35.55 10.2 60.9 12 h after light 36.75 31.8 41.7 4 h after dark 32.35 24.1 40.6 8 h after dark 36.65 35.3 38.0 12 h after dark 19.25 5.9 32.6