condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.24422833333333335 0.0 0.732685 Mature Stem with Root 2.49233 0.0 7.47699 Root 4.69886 0.0 13.1219