condition mean min max Sterile Leaflet 4.2701 0.0 7.34515 Fertile Leaflet with Sori 0.23734633333333333 0.0 0.712039 Primary Rachis 0.23544500000000002 0.0 0.706335 Petiole 0.6458056666666667 0.325607 1.02258 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0