condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.7912133333333333 0.0 5.37364 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 6.363628666666666 0.352626 16.8954 Root 0.0 0.0 0.0