condition mean min max 0 h after light 7.375895 5.87147 8.88032 4 h after light 11.87895 11.7629 11.995 8 h after light 21.2759 19.7968 22.755 4 h after dark 25.908 24.6046 27.2114 8 h after dark 12.51575 12.4193 12.6122 12 h after dark 9.4041 7.1834 11.6248