condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.19726266666666667 0.0 0.591788 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.104620333333333 0.0 5.403 Root 0.0 0.0 0.0