condition mean min max Sterile Leaflet 0.15432333333333334 0.0 0.46297 Fertile Leaflet with Sori 1.84554 0.0 5.53662 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.23691433333333334 0.0 0.710743 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0