condition mean min max Sterile Leaflet 2.314286666666667 0.0 4.2609 Fertile Leaflet with Sori 0.43022999999999995 0.0 1.29069 Primary Rachis 1.7476666666666667 0.0 5.243 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