condition mean min max Sterile Leaflet 3.1390366666666667 1.20716 6.03469 Fertile Leaflet with Sori 0.9408436666666666 0.489721 1.18942 Primary Rachis 3.45295 1.20844 4.78386 Petiole 1.5459839999999998 0.529122 2.87165 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0