condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.1728896666666667 0.0 0.518669 Mature Stem with Root 3.492468333333333 0.0 9.88552 Root 3.362556 0.177148 8.44276