condition mean min max Sterile Frond 2.3765466666666666 0.0 7.12964 Fertile Frond 0.12601733333333334 0.0 0.378052 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