condition mean min max Sterile Leaflet 3.70932 0.0 7.28841 Fertile Leaflet with Sori 2.325893333333333 1.76898 2.85077 Primary Rachis 0.5934523333333334 0.0 1.15919 Petiole 0.479202 0.181457 0.934895 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0