condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0160851 0.0 0.0482553 Petiole 2.63576 0.0 7.90728 Root 0.0097158 0.0 0.0291474