condition mean min max 4 h after light 105.3 105.3 105.3 8 h after light 101.15 90.4 111.9 12 h after light 94.85 82.6 107.1 4 h after dark 107.9 70.9 144.9 8 h after dark 143.2 104.3 182.1 12 h after dark 128.35 110.0 146.7