condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.13973733333333332 0.0 0.419212 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 1.8792499999999999 0.0 5.63775 Root 1.3824166666666666 0.0 4.14725