condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 7.37521 0.0 13.5116 Petiole 0.12757566666666667 0.0 0.382727 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0