condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 2.784746666666667 0.0 6.04917 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 11.2334 0.0 21.2016 Root 0.9953356666666667 0.221816 2.11913