condition mean min max Sterile Leaflet 0.2575463333333333 0.0 0.612025 Fertile Leaflet with Sori 8.319376666666667 0.75499 21.3537 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