condition mean min max Sterile Leaflet 9.111076666666667 0.0 17.8715 Fertile Leaflet with Sori 0.13950766666666667 0.0 0.418523 Primary Rachis 0.270621 0.0 0.811863 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