condition mean min max Sterile Leaflet 2.579409666666667 0.0 7.52907 Fertile Leaflet with Sori 0.3201512 0.0627086 0.58192 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.2821726 0.0809298 0.462612 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0