condition mean min max Sterile Leaflet 0.0 0.0 0.0 Mature Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Rhizome 0.167547 0.0 0.390308 Stolon 0.0 0.0 0.0 Stolon with Root 2.5953856666666666 0.630637 4.38939