condition mean min max 4 h after light 95.6 95.6 95.6 8 h after light 65.65 47.2 84.1 12 h after light 103.5 81.1 125.9 4 h after dark 140.75 120.5 161.0 8 h after dark 117.80000000000001 114.4 121.2 12 h after dark 78.7 72.9 84.5