condition mean min max Sterile Leaflet 0.193204 0.110407 0.351473 Fertile Leaflet with Sori 0.4872936666666667 0.282705 0.768012 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 2.5764056666666666 0.481957 5.69179 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0