condition mean min max Sterile Leaflet 0.239142 0.0 0.499593 Fertile Leaflet with Sori 4.33923 3.70723 5.19023 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.13601133333333332 0.0 0.301618 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.316085 0.107111 0.493537