condition mean min max Sterile Leaflet 2.5307323333333334 0.389708 6.4666 Fertile Leaflet with Sori 2.2441233333333335 0.0 5.31777 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0