condition mean min max Sterile Leaflet 1.4028933333333333 0.0 3.1861 Fertile Leaflet with Sori 2.592606 0.612498 4.98796 Primary Rachis 1.382646 0.259888 2.82268 Petiole 0.749493 0.0 1.62175 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0