condition mean min max 0 h after light 16.1114 15.1416 17.0812 2 h after light 10.95485 10.7633 11.1464 4 h after light 13.97475 12.887 15.0625 8 h after light 18.1304 17.8845 18.3763 12 h after light 19.126649999999998 17.4909 20.7624 2 h after dark 21.443849999999998 19.0889 23.7988 4 h after dark 22.6694 20.9821 24.3567 8 h after dark 22.6998 22.4358 22.9638 12 h after dark 18.170099999999998 18.0501 18.2901