condition mean min max Sterile Leaflet 0.2727286666666667 0.0 0.658361 Fertile Leaflet with Sori 3.8380466666666666 1.25463 5.97541 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