condition mean min max Sterile Leaflet 0.07122973333333332 0.0 0.139419 Fertile Leaflet with Sori 1.8820533333333334 0.0 5.64616 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