condition mean min max Sterile Leaflet 17.736216666666667 0.0 48.8394 Fertile Leaflet with Sori 6.5570873333333335 0.0 18.9066 Primary Rachis 1.03396 0.0 3.10188 Petiole 1.71347 0.0 2.90285 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0