condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 3.65456 1.46119 5.03081 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.703319 0.0 1.64114 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0