condition mean min max Sterile Leaflet 8.021848 0.0 23.2231 Fertile Leaflet with Sori 0.9503233333333333 0.0 2.85097 Primary Rachis 1.5367166666666667 0.0 4.61015 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