condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.008358566666666666 0.0 0.0250757 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0253599 0.0 0.0760797 Root 2.4369633333333334 0.0 4.17956