condition mean min max Sterile Leaflet 3.293243 0.332539 4.83057 Fertile Leaflet with Sori 4.473366666666667 1.27482 6.81465 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 2.130653666666667 0.202661 4.77175 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0