condition mean min max 4 h after light 54.389250000000004 45.1479 63.6306 8 h after light 48.48755 48.0936 48.8815 12 h after light 50.79795 41.424 60.1719 4 h after dark 44.13565 41.9079 46.3634 8 h after dark 49.20415 48.0961 50.3122 12 h after dark 52.61595 49.386 55.8459