condition mean min max Sterile Leaflet 0.289514 0.0 0.868542 Fertile Leaflet with Sori 4.3582366666666665 2.25504 7.1036 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.08339866666666668 0.0 0.184791 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0