condition mean min max 4 h after light 15.8 15.8 15.8 8 h after light 45.95 39.7 52.2 12 h after light 53.7 52.1 55.3 4 h after dark 18.3 4.4 32.2 8 h after dark 54.5 47.8 61.2 12 h after dark 47.55 28.4 66.7