condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 3.6334586 0.0 10.8005 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 13.1219 1.8944 22.9396 Root 3.648409 0.237947 6.39856