condition mean min max 4 h after light 48.5 48.5 48.5 8 h after light 27.85 13.2 42.5 12 h after light 23.2 19.5 26.9 4 h after dark 23.75 9.9 37.6 8 h after dark 8.4 3.8 13.0 12 h after dark 14.55 7.0 22.1