condition mean min max Sterile Leaflet 0.053986 0.0 0.161958 Fertile Leaflet with Sori 2.249608 0.313594 3.88589 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.22025166666666668 0.0 0.36536 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0