condition mean min max Sterile Leaflet 3.4350443333333334 0.0 10.2423 Fertile Leaflet with Sori 0.09895666666666668 0.0 0.29687 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.142599 0.0 0.427797 Root 0.0 0.0 0.0