condition mean min max Sterile Leaflet 0.8196366666666667 0.0 2.45891 Fertile Leaflet with Sori 3.129031 0.125973 7.42452 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.144058 0.0 0.432174 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.039440666666666666 0.0 0.118322