condition mean min max Sterile Frond 19.299133333333334 0.0 57.8974 Fertile Frond 2.4590433333333332 0.0 7.37713 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.57767 0.0 7.73301 Root 0.0 0.0 0.0