condition mean min max Sterile Frond 2.1007100000000003 0.0 5.15683 Fertile Frond 0.8209503333333332 0.0 2.25797 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