condition mean min max Sterile Leaflet 2.484417 0.0 6.68137 Fertile Leaflet with Sori 0.08281566666666666 0.0 0.248447 Primary Rachis 0.33143333333333336 0.0 0.72768 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