condition mean min max Sterile Leaflet 0.62168 0.0 1.11831 Fertile Leaflet with Sori 4.677776333333333 0.542129 7.73891 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.0 0.0 0.0 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0