condition mean min max 0 h after light 1.065874 0.954618 1.17713 4 h after light 28.13685 14.3358 41.9379 8 h after light 145.7865 132.149 159.424 4 h after dark 10.95144 9.90938 11.9935 8 h after dark 3.158385 2.78357 3.5332 12 h after dark 1.188905 1.06359 1.31422