condition mean min max 3 h after light 12.8621 11.916 14.147 6 h after light 7.23286 6.83845 7.59384 9 h after light 5.723633333333333 5.26842 6.10321 12 h after light 6.90139 5.52814 8.67787 3 h after dark 9.476033333333334 8.53738 9.99051 6 h after dark 14.3026 11.9979 15.7452 9 h after dark 16.225766666666665 13.899 18.0446 12 h after dark 11.75694 9.59072 13.2326