condition mean min max Sterile Leaflet 0.08474766666666667 0.0 0.254243 Fertile Leaflet with Sori 59.0607 0.0 160.702 Primary Rachis 0.0 0.0 0.0 Petiole 0.16987266666666667 0.0 0.509618 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0