condition mean min max Sterile Leaflet 2.25868 0.0 6.77604 Fertile Leaflet with Sori 0.102343 0.0 0.156747 Primary Rachis 0.164167 0.0 0.492501 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