condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.039785633333333334 0.0 0.0741652 Mature Stem with Root 4.611483333333333 0.0 12.0733 Root 2.146125 0.711225 3.51687