condition mean min max Sterile Frond 0.7410133333333334 0.0 2.22304 Fertile Frond 0.447298 0.0 0.8936 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 4.567233333333333 0.0 13.7017 Root 0.0 0.0 0.0