condition mean min max Sterile Leaflet 0.10532933333333333 0.0 0.315988 Fertile Leaflet with Sori 2.045916666666667 0.0 4.08783 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