condition mean min max Sterile Leaflet 0.12556599999999998 0.0 0.376698 Fertile Leaflet with Sori 10.7464 0.0 19.4163 Petiole 0.0 0.0 0.0 Crozier 0.4053166666666667 0.0 1.21595 Rhizome 0.016096766666666668 0.0 0.0482903 Root 0.0 0.0 0.0