condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.137599 0.0 0.412797 Mature Stem with Root 7.05401 0.0 20.1352 Root 7.897966666666666 0.0 23.6939