condition mean min max Sterile Leaflet 1.0519533333333333 0.0 3.15586 Fertile Leaflet with Sori 12.059547333333335 0.0 35.9354 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.21550033333333332 0.0 0.416487 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0