condition mean min max Sterile Frond 2.51919 0.0 4.05268 Fertile Frond 7.1428 0.0 21.4284 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.06422833333333333 0.0 0.192685 Root 0.0 0.0 0.0