condition mean min max Sterile Leaflet 4.445966666666666 0.0 13.3379 Fertile Leaflet with Sori 0.147167 0.0 0.441501 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