condition mean min max Sterile Leaflet 6.699520000000001 0.0 17.928 Fertile Leaflet with Sori 1.25627 0.0 3.76881 Primary Rachis 1.8077633333333332 0.0 5.42329 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