condition mean min max Sterile Leaflet 0.52569 0.0 1.57707 Fertile Leaflet with Sori 0.0 0.0 0.0 Petiole 0.11775000000000001 0.0 0.35325 Crozier 0.0 0.0 0.0 Rhizome 0.31495100000000004 0.0 0.944853 Root 4.648341666666667 0.0 13.0014