condition mean min max Sterile Leaflet 2.8631130000000002 0.0 7.61917 Fertile Leaflet with Sori 1.042637 0.0 2.93902 Primary Rachis 0.9991006666666666 0.0 2.68388 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