condition mean min max Sterile Leaflet 0.15779 0.0 0.47337 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.46028 0.0 1.38084 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.717414 0.0 1.76173 Root 2.342114 0.634782 4.31911