condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.6373096666666667 0.254106 1.15693 Petiole 0.0 0.0 0.0 Crozier 2.587844 0.658642 5.43921 Rhizome 0.032451233333333336 0.0 0.0490634 Root 0.212514 0.0 0.637542