condition mean min max 4 h after light 10.95975 10.7511 11.1684 8 h after light 9.83728 9.18366 10.4909 12 h after light 9.547975 7.22005 11.8759 4 h after dark 16.628149999999998 16.291 16.9653 8 h after dark 13.81095 13.606 14.0159 12 h after dark 15.4032 14.7317 16.0747