condition mean min max 4 h after light 47.9 47.9 47.9 8 h after light 26.7 25.5 27.9 12 h after light 41.4 25.7 57.1 4 h after dark 5.5 3.9 7.1 8 h after dark 30.35 12.1 48.6 12 h after dark 39.15 36.3 42.0