condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.0074193333333334 0.0 2.80147 Young Stem with Root 6.4399733333333335 0.0 14.7318 Mature Stem with Root 3.248576 0.0 9.14029 Root 10.92277 2.28098 24.8316