condition mean min max 4 h after light 0.0141842 0.0 0.0283684 8 h after light 0.0 0.0 0.0 12 h after light 0.01129535 0.0 0.0225907 4 h after dark 0.0 0.0 0.0 8 h after dark 0.0 0.0 0.0 12 h after dark 0.017374766666666666 0.0 0.0389185