condition mean min max Sterile Leaflet 4.3933800000000005 0.0 10.1781 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.247838 0.0 0.380973 Petiole 0.19847066666666668 0.0 0.595412 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0