condition mean min max Sterile Leaflet 0.3527133333333334 0.0 1.05814 Fertile Leaflet with Sori 4.58653 2.71935 8.27865 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