condition mean min max Sterile Leaflet 1.35586 0.0 2.04435 Fertile Leaflet with Sori 3.173573333333333 0.0 6.5703 Petiole 4.161823 0.143219 6.96311 Crozier 4.072587333333334 0.429682 9.79644 Rhizome 7.07794 0.0 18.3142 Root 7.941905 0.426995 15.0523