condition mean min max Sterile Leaflet 0.7095866666666667 0.0 2.12876 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 6.3243 0.0 18.9729 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