condition mean min max Sterile Leaflet 1.123836 0.325358 2.47811 Fertile Leaflet with Sori 0.3330496666666667 0.0 0.512927 Primary Rachis 2.1739346666666663 0.133271 6.22263 Petiole 0.217221 0.0 0.390885 Crozier 0.0220019 0.0 0.0660057 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0