condition mean min max Sterile Leaflet 0.6359546666666667 0.0 1.66534 Fertile Leaflet with Sori 1.88851 0.0 4.36241 Primary Rachis 3.43746 0.0 6.62317 Secondary Rachis 3.9614766666666665 0.0 6.79306 Petiole 0.300692 0.0 0.745491 Crozier 0.28015 0.0 0.492556 Root 0.0 0.0 0.0