condition mean min max Sterile Leaflet 0.379844 0.0 0.715641 Fertile Leaflet with Sori 2.4893296666666664 0.892749 4.48165 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