condition mean min max Sterile Leaflet 0.6132986666666667 0.0 1.22265 Fertile Leaflet with Sori 6.100686666666666 2.22393 9.91719 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