condition mean min max Sterile Leaflet 0.013878966666666668 0.0 0.027206 Fertile Leaflet with Sori 0.012749400000000001 0.0 0.0382482 Petiole 0.0 0.0 0.0 Crozier 0.0045408666666666665 0.0 0.0136226 Rhizome 0.0976402 0.0 0.226214 Root 4.50695 0.0 8.10698