condition mean min max Sterile Leaflet 0.05598433333333333 0.0 0.167953 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 0.065775 0.0 0.197325 Rhizome 2.3973606666666667 0.496642 4.46085 Root 0.034731 0.0 0.104193