condition mean min max Sterile Leaflet 10.51517 5.48687 16.0621 Fertile Leaflet with Sori 10.438423333333333 1.83536 26.5886 Primary Rachis 0.320311 0.0 0.960933 Secondary Rachis 1.7405436666666667 0.493611 2.73406 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0