condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.091462 0.0 0.274386 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 3.283886666666667 0.0 9.85166 Root 0.07827833333333332 0.0 0.234835