condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.6161666666666666 0.0 1.8485 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.220236 0.0 2.68549 Root 7.2114 0.0 21.6342