condition mean min max 4 h after light 196.8 196.8 196.8 8 h after light 210.25 205.1 215.4 12 h after light 131.9 91.2 172.6 4 h after dark 93.25 81.1 105.4 8 h after dark 131.35 93.3 169.4 12 h after dark 133.8 113.0 154.6