condition mean min max Sterile Leaflet 0.237356 0.0 0.370356 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 4.57776 1.14181 9.24253 Secondary Rachis 2.4612903333333334 0.587241 4.98194 Petiole 8.40459 2.94078 13.1801 Crozier 0.644168 0.340484 0.918692 Root 0.298493 0.0 0.895479