condition mean min max Sterile Frond 6.075356666666667 4.17155 8.63198 Fertile Frond 7.95293 4.79986 12.1463 Young Stem with Root 12.10489 6.20487 19.2911 Mature Stem with Root 21.714233333333333 16.7848 26.0475 Root 32.4462 21.7064 41.2656