condition mean min max Sterile Leaflet 0.17280083333333335 0.0 0.475326 Fertile Leaflet with Sori 3.249231333333333 0.0 9.66556 Primary Rachis 0.0 0.0 0.0 Secondary Rachis 1.34945 0.0 4.04835 Petiole 0.0 0.0 0.0 Crozier 0.0 0.0 0.0 Root 0.0 0.0 0.0