condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.039259 0.0 0.117777 Crozier 0.0 0.0 0.0 Rhizome 0.07112733333333333 0.0 0.213382 Root 3.2072843333333334 0.0 9.40286