condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.4501810666666666 0.0 4.33102 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 6.11538 1.8658 8.49904 Root 1.6815569666666665 0.0350989 4.8114