condition mean min max Sterile Leaflet 0.6054133333333334 0.0 1.06803 Fertile Leaflet with Sori 3.513505 0.320345 8.38481 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 2.450552666666667 0.535708 4.10109 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0