condition mean min max 4 h after light 101.2 101.2 101.2 8 h after light 91.45 74.2 108.7 12 h after light 102.25 83.1 121.4 4 h after dark 85.35 71.9 98.8 8 h after dark 89.95 57.2 122.7 12 h after dark 112.65 112.2 113.1