condition mean min max Sterile Frond 0.07306633333333333 0.0 0.219199 Fertile Frond 2.4990923333333335 0.0 6.9725 Young Stem with Root 0.079739 0.0 0.239217 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0