condition mean min max 4 h after light 44.8 44.8 44.8 8 h after light 47.55 38.5 56.6 12 h after light 49.6 28.3 70.9 4 h after dark 73.9 66.6 81.2 8 h after dark 74.1 72.4 75.8 12 h after dark 65.45 50.9 80.0