condition mean min max Sterile Leaflet 2.5584533333333335 0.0 4.44161 Fertile Leaflet with Sori 0.3822353333333333 0.0 0.961399 Primary Rachis 0.34098 0.0 1.02294 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