condition mean min max 3 h after light 6.91991 6.1136 7.89645 6 h after light 6.896796666666666 6.05763 8.45398 9 h after light 7.0796166666666664 6.22561 8.11303 12 h after light 8.789303333333333 6.89948 10.196 3 h after dark 12.579033333333333 12.316 12.8109 6 h after dark 17.5298 16.5648 18.3148 9 h after dark 15.308 13.5561 17.6061 12 h after dark 12.096400000000001 11.7338 12.6906