condition mean min max 0 h after light 0.0 0.0 0.0 4 h after light 0.04309665 0.0 0.0861933 8 h after light 0.08712495 0.0858839 0.088366 4 h after dark 0.17068305 0.0855941 0.255772 8 h after dark 0.04350625 0.0 0.0870125 12 h after dark 0.086692 0.0 0.173384