condition mean min max Sterile Leaflet 0.9580500000000001 0.0 2.87415 Fertile Leaflet with Sori 2.326715666666667 0.0 6.38539 Primary Rachis 0.6567363333333334 0.0 1.73713 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