condition mean min max Sterile Leaflet 0.262953 0.0 0.395424 Fertile Leaflet with Sori 0.9774936666666667 0.778827 1.18547 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.8227166666666665 1.31646 2.74741 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0