condition mean min max Sterile Leaflet 2.5541133333333335 0.0 6.20389 Fertile Leaflet with Sori 0.311998 0.0 0.935994 Primary Rachis 1.336937 0.0 3.06277 Petiole 0.2685106666666667 0.0 0.805532 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0