condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.14491333333333334 0.0 0.43474 Young Stem with Root 0.5392766666666667 0.0 1.61783 Mature Stem with Root 0.0 0.0 0.0 Root 3.7003399999999997 0.0 10.7074