condition mean min max Sterile Leaflet 0.32410066666666665 0.0 0.972302 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.26777033333333333 0.0 0.803311 Root 6.06836 1.42274 14.821