condition mean min max Sterile Frond 0.816095 0.0 1.82963 Fertile Frond 5.6682999999999995 0.0 17.0049 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.08695866666666667 0.0 0.260876 Root 0.0 0.0 0.0