condition mean min max 3 h after light 1.8903563333333333 0.77516 5.11878 7 h after light 2.635718 0.658461 6.58854 11 h after light 2.3938528333333333 0.981984 6.06256 2 h after dark 2.692154 0.813916 7.66694 6 h after dark 2.1925335 0.468012 4.92191 10 h after dark 1.717854 0.666609 3.95925