condition mean min max Sterile Leaflet 2.976043333333333 0.0 7.92544 Fertile Leaflet with Sori 0.354519 0.338578 0.370848 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.215163 0.0 0.645489 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0