condition mean min max Sterile Leaflet 1.6824633333333334 0.0 3.43013 Fertile Leaflet with Sori 0.052596000000000004 0.0 0.157788 Primary Rachis 2.6267856666666667 0.620317 4.79601 Petiole 0.097482 0.0 0.292446 Crozier 0.0 0.0 0.0 Rhizome 0.0 0.0 0.0 Root 0.0 0.0 0.0