condition mean min max Sterile Leaflet 2.5770193333333333 0.0 6.96929 Fertile Leaflet with Sori 1.1203 0.0 1.98233 Primary Rachis 0.23868966666666666 0.0 0.441606 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