condition mean min max Sterile Leaflet 0.0 0.0 0.0 Fertile Leaflet with Sori 2.441086 0.0 7.05401 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.61337 0.0 1.84011 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0