condition mean min max 4 h after light 111.2 111.2 111.2 8 h after light 99.05 83.8 114.3 12 h after light 96.8 89.6 104.0 4 h after dark 115.7 104.5 126.9 8 h after dark 135.65 111.7 159.6 12 h after dark 154.5 109.7 199.3