condition mean min max 0 h after light 3.70954 3.65993 3.75915 4 h after light 3.93764 3.82135 4.05393 8 h after light 2.9919700000000002 2.96998 3.01396 4 h after dark 3.98119 3.87723 4.08515 8 h after dark 3.5396549999999998 3.22994 3.84937 12 h after dark 3.33316 3.28414 3.38218