condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 15.340966666666667 14.3342 17.0492 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