condition mean min max Sterile Leaflet 3.051696666666667 0.0 8.08327 Fertile Leaflet with Sori 0.33702 0.0 0.814506 Primary Rachis 0.20978566666666668 0.0 0.465876 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