condition mean min max Sterile Leaflet 4.883769 0.0 14.0514 Fertile Leaflet with Sori 0.7906316666666666 0.0 2.08165 Primary Rachis 1.3395936666666666 0.0 3.72926 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