condition mean min max Sterile Leaflet 9.203013333333335 0.0 19.2677 Fertile Leaflet with Sori 1.4940966666666666 0.0 4.48229 Primary Rachis 0.0 0.0 0.0 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