condition mean min max Sterile Frond 6.916514666666667 0.0 20.0181 Fertile Frond 7.013483333333334 0.0 18.8773 Young Stem with Root 3.2546359999999996 0.0 9.38299 Mature Stem with Root 5.572896 0.0 16.3776 Root 8.01202 0.0 21.5158