condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.053485 0.0 0.160455 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.493921333333333 0.0 7.30411 Root 5.527297333333333 0.0 16.4243