condition mean min max 4 h after light 105.9 105.9 105.9 8 h after light 172.2 106.4 238.0 12 h after light 161.65 114.5 208.8 4 h after dark 161.15 110.0 212.3 8 h after dark 149.45 118.6 180.3 12 h after dark 102.85 94.6 111.1