condition mean min max Sterile Leaflet 1.8846908666666666 0.0570026 4.21652 Fertile Leaflet with Sori 0.5500925333333333 0.0821896 1.27318 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 2.6330256666666667 0.0 7.5486 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.026125 0.0 0.078375