condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 6.5722000000000005 2.56419 12.9488 Root 0.5811133333333333 0.0 1.74334