condition mean min max Sterile Frond 0.12155766666666667 0.0 0.364673 Fertile Frond 1.9488936666666667 0.0 5.11329 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0