condition mean min max 4 h after light 10.11946 9.00639 11.8714 8 h after light 3.53863 1.72999 5.13794 12 h after light 3.3115666666666668 1.83739 5.29624 4 h after dark 4.75314 3.07806 5.82048 8 h after dark 13.441033333333333 8.2397 16.658 12 h after dark 20.345 17.3393 22.3772