condition mean min max Sterile Leaflet 0.6103836666666667 0.0 1.7071 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 2.0874366666666666 0.0 6.26231 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0