condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 9.483133333333333 0.0 28.4494 Primary Rachis 1.0502766666666667 0.0 3.15083 Secondary Rachis 9.3312 0.0 27.9936 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0