condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 1.3981899999999998 0.0 4.19457 Mature Stem with Root 0.0 0.0 0.0 Root 2.25481 0.0 3.57665