condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 2.37976 0.0 7.13928 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.7367766666666666 0.0 2.21033 Root 0.0 0.0 0.0