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 0.023260675 0.0 0.0930427 3 h after dark 0.0 0.0 0.0 6 h after dark 0.034519666666666664 0.0 0.103559 9 h after dark 0.0 0.0 0.0 12 h after dark 0.178066 0.0 0.356132