condition mean min max Sterile Leaflet 0.14013683333333332 0.0 0.395497 Fertile Leaflet with Sori 3.568706166666667 0.0598785 9.26783 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.008663 0.0 0.025989 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0