condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.08203433333333333 0.0 0.246103 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.510946666666667 0.0 5.20028 Root 0.0 0.0 0.0