condition mean min max Sterile Leaflet 0.05390866666666667 0.0 0.161726 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 2.02637 0.0 6.07911 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