condition mean min max Sterile Leaflet 0.16801566666666667 0.0 0.504047 Fertile Leaflet with Sori 0.0 0.0 0.0 Primary Rachis 0.060909 0.0 0.182727 Petiole 0.0 0.0 0.0 Crozier 2.251176666666667 1.31336 2.93861 Rhizome 0.40636 0.0 1.21908 Root 0.0 0.0 0.0