condition mean min max 4 h after light 10.28871 8.98792 11.5895 8 h after light 8.433245 8.37707 8.48942 12 h after light 6.720075 6.24126 7.19889 4 h after dark 8.572553333333333 7.87109 9.13044 8 h after dark 13.847166666666666 10.7429 15.5653 12 h after dark 12.024 10.9065 13.6118