condition mean min max Sterile Leaflet 3.928842666666667 0.0 10.9913 Fertile Leaflet with Sori 0.12858433333333333 0.0 0.385753 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0