condition mean min max 0 h after light 17.405 12.597 22.213 2 h after light 9.435795 8.22559 10.646 4 h after light 14.00465 13.4049 14.6044 8 h after light 8.49034 7.87503 9.10565 12 h after light 9.978185 9.13777 10.8186 2 h after dark 7.634130000000001 5.80773 9.46053 4 h after dark 14.097695 9.45589 18.7395 8 h after dark 21.6222 16.7891 26.4553 12 h after dark 11.020555 8.50831 13.5328