condition mean min max Sterile Leaflet 6.672316333333334 0.292989 15.5792 Fertile Leaflet with Sori 0.35014666666666666 0.0 1.05044 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