condition mean min max 4 h after light 106.6 106.6 106.6 8 h after light 49.7 22.7 76.7 12 h after light 83.95 77.9 90.0 4 h after dark 69.25 19.4 119.1 8 h after dark 67.55 55.8 79.3 12 h after dark 37.3 26.3 48.3