condition mean min max Sterile Leaflet 0.036593 0.0 0.0627731 Fertile Leaflet with Sori 2.193041 0.884733 4.34957 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0759756 0.0 0.212728 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0249313 0.0 0.039317