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 0.162235 0.0 0.486705 Crozier 0.0 0.0 0.0 Rhizome 1.8430026666666666 0.310988 2.72781 Stolon 0.0 0.0 0.0 Stolon with Root 0.09454933333333333 0.0 0.283648