condition mean min max 4 h after light 47.3 47.3 47.3 8 h after light 57.2 50.0 64.4 12 h after light 55.95 51.2 60.7 4 h after dark 90.15 70.9 109.4 8 h after dark 110.25 77.8 142.7 12 h after dark 58.9 53.5 64.3