condition mean min max Sterile Leaflet 4.1370466666666665 0.0 9.58164 Fertile Leaflet with Sori 0.17404833333333333 0.0 0.522145 Primary Rachis 0.463938 0.0 0.746581 Petiole 0.116163 0.0 0.176491 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0