condition mean min max 4 h after light 1.71146 1.6522 1.77072 8 h after light 6.173195 5.75255 6.59384 12 h after light 6.568215 3.64809 9.48834 4 h after dark 7.239516666666667 6.89686 7.43954 8 h after dark 2.27638 1.89668 2.55498 12 h after dark 3.1843833333333333 2.38941 3.94578