condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.14305466666666666 0.0 0.429164 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.811218 0.0 7.47281 Root 0.0 0.0 0.0