condition mean min max 4 h after light 40.2 40.2 40.2 8 h after light 9.35 2.0 16.7 12 h after light 55.35 50.2 60.5 4 h after dark 80.85 57.9 103.8 8 h after dark 46.95 39.7 54.2 12 h after dark 35.4 32.4 38.4