condition mean min max Sterile Leaflet 2.6719303333333335 0.0 7.74155 Fertile Leaflet with Sori 0.250031 0.0 0.750093 Primary Rachis 0.07032766666666666 0.0 0.210983 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