condition mean min max 3 h after light 0.735247 0.525234 1.09773 6 h after light 1.046866 0.519698 1.44644 9 h after light 1.506827 0.976891 1.99545 12 h after light 2.8335033333333333 2.79712 2.90012 3 h after dark 2.79482 2.49935 2.99042 6 h after dark 3.61062 3.30935 3.87825 9 h after dark 2.022553333333333 1.64181 2.39313 12 h after dark 0.5262443333333333 0.353216 0.664684