condition mean min max Sterile Leaflet 2.13302 0.0 6.39906 Fertile Leaflet with Sori 0.31269933333333333 0.0 0.938098 Primary Rachis 1.4765866666666667 0.0 4.42976 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