condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.069993 0.0 0.209979 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.2769133333333333 0.0 4.78904 Root 0.13334233333333334 0.0 0.400027