condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.04221166666666667 0.0 0.126635 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 5.94521 0.0 14.7756 Root 1.60485 0.0 3.29015