condition mean min max 4 h after light 7.16737 6.5807 7.75404 8 h after light 12.9097 11.1573 14.6621 12 h after light 8.79547 8.63741 8.95353 4 h after dark 14.5352 11.0273 18.0431 8 h after dark 10.56411 9.54132 11.5869 12 h after dark 8.958874999999999 7.38795 10.5298