condition mean min max Sterile Leaflet 2.51789 0.0 7.55367 Fertile Leaflet with Sori 0.48738333333333334 0.0 1.46215 Primary Rachis 2.6319466666666664 0.0 7.89584 Petiole 0.314285 0.0 0.607298 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0