condition mean min max Sterile Leaflet 0.07987733333333334 0.0 0.239632 Fertile Leaflet with Sori 4.5154000000000005 0.0 13.5462 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.40868 0.0 1.22604 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0