condition mean min max Sterile Leaflet 0.10532933333333333 0.0 0.315988 Fertile Leaflet with Sori 5.12562 2.21684 7.02828 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