condition mean min max Sterile Leaflet 0.5829096666666667 0.396566 0.890064 Fertile Leaflet with Sori 4.177803333333333 2.2909 7.0328 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.035056 0.340686 2.09564 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0