condition mean min max Sterile Leaflet 0.31809133333333334 0.0 0.954274 Fertile Leaflet with Sori 0.30063999999999996 0.0 0.676823 Petiole 0.0 0.0 0.0 Crozier 4.989533333333333 0.0 14.9686 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0