condition mean min max Sterile Leaflet 0.13092366666666666 0.0 0.392771 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.09462693333333333 0.0758892 0.114954 Petiole 0.1300876 0.0230768 0.251782 Crozier 2.90067 1.82714 4.15518 Rhizome 0.1282598 0.0579224 0.168528 Root 0.3051681 0.0679793 0.730908