condition mean min max Sterile Leaflet 2.542744 0.0 7.34335 Fertile Leaflet with Sori 0.322777 0.0 0.654422 Primary Rachis 0.06085933333333333 0.0 0.182578 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