condition mean min max Sterile Leaflet 0.240113 0.0 0.370503 Fertile Leaflet with Sori 2.275536 0.606548 4.93096 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.19128733333333334 0.0 0.573862 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0