condition mean min max 3 h after light 1.62479 1.29753 2.02641 6 h after light 2.06841 1.1903 2.51306 9 h after light 3.2071966666666665 2.52797 3.62837 12 h after light 6.000553333333333 4.46845 7.0588 3 h after dark 7.877186666666667 7.35728 8.86573 6 h after dark 5.3397 3.64156 6.6997 9 h after dark 3.64261 2.75912 4.14746 12 h after dark 2.01004 1.34243 2.62724