condition mean min max Sterile Leaflet 6.463213333333333 0.0 12.9287 Fertile Leaflet with Sori 0.5883073333333333 0.0 1.06706 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.041928 0.0 2.71719 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0