condition mean min max Sterile Leaflet 4.509804666666667 0.0 12.8818 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.5208816666666667 0.0 1.2258 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