condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.184501 0.0 0.553503 Rhizome 0.456744 0.0 0.793318 Root 2.243106666666667 0.0 4.27644