condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.0 0.0 0.0 12 h after light 0.0133183 0.0 0.0266366 4 h after dark 0.019551166666666665 0.0 0.0586535 8 h after dark 0.0 0.0 0.0 12 h after dark 0.0 0.0 0.0