condition mean min max Sterile Leaflet 3.475909 0.0 9.60941 Fertile Leaflet with Sori 2.833503666666666 0.0 8.12887 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 2.0549766666666667 1.30016 3.37794 Rhizome 0.0 0.0 0.0 Root 0.094342 0.0 0.283026