condition mean min max 4 h after light 4.508855 3.54182 5.47589 8 h after light 3.48168 1.99342 4.96994 12 h after light 6.708265 6.2982 7.11833 4 h after dark 7.65597 6.1542 9.92103 8 h after dark 6.113996666666667 5.46951 6.78681 12 h after dark 2.6566899999999998 0.0 4.21381