condition mean min max Sterile Frond 0.9279833333333333 0.0 2.78395 Fertile Frond 4.260966666666667 0.0 12.7829 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