condition mean min max Sterile Leaflet 0.39415 0.0 0.885877 Fertile Leaflet with Sori 0.087298 0.0 0.261894 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 42.28373333333333 36.9326 45.6017 Root 0.0 0.0 0.0