condition mean min max Sterile Leaflet 9.891133333333332 0.0 19.3559 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.108363 0.0 0.325089 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