condition mean min max Sterile Leaflet 4.156933333333334 0.0 6.953 Fertile Leaflet with Sori 0.34615999999999997 0.0 0.730903 Primary Rachis 0.0 0.0 0.0 Petiole 0.24194533333333335 0.0 0.36763 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0