condition mean min max 3 h after light 0.0 0.0 0.0 6 h after light 0.0 0.0 0.0 9 h after light 0.0 0.0 0.0 12 h after light 0.0145256 0.0 0.0435768 3 h after dark 0.016763766666666666 0.0 0.0502913 6 h after dark 0.021138599999999997 0.0 0.0634158 9 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0