condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.6447266666666667 0.0 1.93418 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 4.34183 0.0 12.0071