condition mean min max Sterile Leaflet 0.6170056666666667 0.0 1.49826 Fertile Leaflet with Sori 0.757058 0.0 1.37683 Primary Rachis 2.110579 0.993437 2.98141 Petiole 0.37959433333333337 0.0 0.97955 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0