condition mean min max 4 h after light 42.7 42.7 42.7 8 h after light 51.05 43.0 59.1 12 h after light 56.05 41.5 70.6 4 h after dark 38.3 21.4 55.2 8 h after dark 79.15 68.8 89.5 12 h after dark 70.25 68.3 72.2