condition mean min max 4 h after light 0.0050837 0.0 0.0101674 8 h after light 0.022874785 0.00993667 0.0358129 12 h after light 0.0 0.0 0.0 4 h after dark 0.0 0.0 0.0 8 h after dark 0.010431866666666666 0.0 0.0312944 12 h after dark 0.0 0.0 0.0