condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.30918033333333333 0.0 0.927541 Young Stem with Root 0.09547 0.0 0.28641 Mature Stem with Root 2.859811 0.0 7.92797 Root 2.704198 0.0 7.54509