condition mean min max Sterile Leaflet 0.08824133333333334 0.0 0.264724 Fertile Leaflet with Sori 4.900883333333333 3.60336 6.14576 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