condition mean min max Sterile Leaflet 2.5526033333333333 0.0 4.98311 Fertile Leaflet with Sori 0.32913200000000004 0.0 0.987396 Primary Rachis 0.0 0.0 0.0 Petiole 0.10427366666666667 0.0 0.312821 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0