condition mean min max Sterile Frond 0.5450006666666667 0.0 1.46586 Fertile Frond 2.4534133333333332 0.0 7.36024 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