condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 3.194199 0.0 8.76574 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.3555173333333332 0.0 3.18072 Root 0.04379333333333333 0.0 0.13138