condition mean min max 3 h after light 3.86064 3.13554 4.54466 6 h after light 3.88558 3.19539 4.77552 9 h after light 6.61745 6.43645 6.71932 12 h after light 11.4422 10.5813 12.3543 3 h after dark 12.7831 11.4153 14.5825 6 h after dark 9.44089 7.40642 11.6898 9 h after dark 10.414603333333334 6.62514 16.0855 12 h after dark 5.989486666666666 4.05999 8.38787