condition mean min max Sterile Leaflet 1.763628 0.296734 3.94748 Fertile Leaflet with Sori 2.9165246666666667 0.802394 5.94185 Primary Rachis 2.404827 0.378661 4.48545 Petiole 0.8522866666666666 0.0 1.36768 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0