condition mean min max Sterile Frond 0.11181233333333333 0.0 0.335437 Fertile Frond 3.47191 0.0 9.73973 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0