condition mean min max Sterile Frond 2.3978953333333335 0.789416 4.19641 Fertile Frond 1.7586333333333333 0.31482 2.59313 Young Stem with Root 0.230527 0.0 0.691581 Mature Stem with Root 0.0 0.0 0.0 Root 0.023229299999999998 0.0 0.0696879