condition mean min max Sterile Frond 11.100566666666667 0.0 21.0511 Fertile Frond 5.3845833333333335 0.0 13.381 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0