condition mean min max Sterile Leaflet 0.636898 0.0 1.54635 Fertile Leaflet with Sori 2.48281 0.702 5.69631 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0