condition mean min max 4 h after light 2.3777549999999996 2.15793 2.59758 8 h after light 2.315285 1.86567 2.7649 12 h after light 2.569445 2.41805 2.72084 4 h after dark 2.9803066666666664 1.9921 3.63847 8 h after dark 2.6917566666666666 2.33497 3.04236 12 h after dark 2.33237 1.86891 2.84619