condition mean min max 4 h after light 2.954105 2.82689 3.08132 8 h after light 4.680595 4.34355 5.01764 12 h after light 5.89695 5.87703 5.91687 4 h after dark 7.811606666666666 7.51676 8.08701 8 h after dark 7.107706666666666 6.42547 8.21847 12 h after dark 5.51149 5.14752 5.93613