condition mean min max Sterile Leaflet 0.05103136666666667 0.0 0.104282 Fertile Leaflet with Sori 3.351963 0.125443 9.32886 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0