condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.12529066666666666 0.0 0.375872 Young Stem with Root 0.5809300000000001 0.0 1.74279 Mature Stem with Root 6.06508 0.0 15.8291 Root 2.9775 0.0 7.28219