condition mean min max Sterile Frond 3.034603333333333 0.0 9.10381 Fertile Frond 0.8896633333333334 0.0 2.66899 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0