condition mean min max 4 h after light 10.4147855 10.308288 10.521283 8 h after light 9.9981925 8.745734 11.250651 12 h after light 9.956980999999999 9.084895 10.829067 4 h after dark 9.9876855 9.010499 10.964872 8 h after dark 9.265454 8.991381 9.539527 12 h after dark 9.75448 9.75448 9.75448