condition mean min max Sterile Leaflet 2.2137233333333333 0.0 5.05235 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 1.7577299999999998 0.0 5.27319 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