condition mean min max 4 h after light 8.536795 6.52649 10.5471 8 h after light 12.10625 11.8265 12.386 12 h after light 10.44563 9.83906 11.0522 4 h after dark 11.6452 11.3179 11.9144 8 h after dark 8.849833333333333 7.46413 10.0647 12 h after dark 10.816986666666667 9.81956 11.7327