condition mean min max Sterile Leaflet 0.13240133333333334 0.0 0.397204 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.109846 0.0 0.329538 Root 4.099753333333333 0.0 7.4523