condition mean min max Sterile Leaflet 0.404218 0.0 0.893391 Fertile Leaflet with Sori 6.278550666666667 0.694142 9.60861 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.09831966666666668 0.0 0.294959 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0