condition mean min max Sterile Frond 10.93357 6.99451 14.6323 Fertile Frond 13.5662 10.6198 19.3812 Young Stem with Root 19.6222 10.568 28.537 Mature Stem with Root 11.61155 9.54595 13.0535 Root 11.2267 10.0923 13.0779