condition mean min max 3 h after light 12.9499 12.1104 13.958 6 h after light 8.486783333333333 4.82815 12.8295 9 h after light 5.921076666666667 5.41281 6.81621 12 h after light 5.975956666666667 4.70727 7.43926 3 h after dark 20.738933333333332 19.5961 21.9534 6 h after dark 16.7125 14.19 18.8605 9 h after dark 23.845399999999998 22.3954 25.6645 12 h after dark 19.831599999999998 16.8406 22.9803