condition mean min max Sterile Leaflet 6.273384333333334 0.0 18.1868 Fertile Leaflet with Sori 3.016114 0.0 8.13018 Primary Rachis 0.49219666666666667 0.0 1.47659 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