condition mean min max 3 h after light 17.839959166666667 9.96511 30.8165 7 h after light 18.410675 10.9043 36.5386 11 h after light 20.237490833333332 8.69296 46.9136 2 h after dark 23.354513333333333 9.88036 48.4053 6 h after dark 19.270458333333334 10.753 42.9193 10 h after dark 15.9102875 7.94941 48.0734