condition mean min max 4 h after light 0.0 0.0 0.0 8 h after light 0.461335 0.0 0.92267 12 h after light 0.4893645 0.420696 0.558033 4 h after dark 0.1838545 0.0 0.367709 8 h after dark 0.2764035 0.0 0.552807 12 h after dark 0.1814125 0.0 0.362825