condition mean min max Sterile Leaflet 2.65939 0.0 7.03143 Fertile Leaflet with Sori 1.2087933333333334 0.0 3.62638 Primary Rachis 6.805033333333333 0.0 20.4151 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