condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.35181 0.0 1.05543 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 5.054966666666666 0.0 15.1649 Rhizome 0.0 0.0 0.0 Root 12.666547 0.357651 35.9184