condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 0.962489 0.588741 1.60888 Primary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 5.805656666666667 4.07645 7.63035 Rhizome 4.950513333333333 2.86748 8.44071 Root 0.18176299999999998 0.0 0.279547