condition mean min max Sterile Leaflet 0.095703 0.0 0.287109 Fertile Leaflet with Sori 2.806445666666667 0.528007 4.92243 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 0.3686876666666667 0.0 0.722765 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0