condition mean min max Sterile Leaflet 0.269163 0.141458 0.341775 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 3.601053333333333 2.19107 4.50782 Rhizome 0.1970972 0.0 0.49615 Root 0.4357797 0.0981581 1.00278