condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.258471 0.0 0.775413 Young Stem with Root 0.28825033333333333 0.0 0.864751 Mature Stem with Root 4.756278 0.0 14.128 Root 1.4765723333333334 0.410777 2.18399