condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.23452723333333333 0.0 0.656868 Young Stem with Root 0.030601100000000003 0.0 0.0472826 Mature Stem with Root 3.7369253333333337 0.0 10.8526 Root 0.6916710333333334 0.0416821 1.36472