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 3.201256666666667 0.0 5.55538 Root 5.850328 0.430384 15.3447