condition mean min max Sterile Leaflet 2.97732 0.0 8.93196 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.5488266666666667 0.0 1.64648 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