condition mean min max Sterile Leaflet 3.9331533333333333 0.0 7.11873 Fertile Leaflet with Sori 0.542338 0.322675 0.658264 Primary Rachis 0.6943666666666667 0.0 2.0831 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