condition mean min max Sterile Leaflet 3.2776666666666667 0.0 9.833 Fertile Leaflet with Sori 0.08901133333333333 0.0 0.267034 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