condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.01635755 0.0 0.0327151 12 h after light 0.0398374 0.0 0.0796748 4 h after dark 0.013021133333333332 0.0 0.0390634 8 h after dark 0.02973720666666667 0.0 0.0871035 12 h after dark 0.040718 0.0 0.122154