condition mean min max 0 h after light 3.72519 3.41146 4.03892 4 h after light 2.058975 1.71544 2.40251 8 h after light 9.9319 8.0728 11.791 4 h after dark 10.81345 10.3125 11.3144 8 h after dark 6.83384 6.42434 7.24334 12 h after dark 3.133655 2.68345 3.58386