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 9.807338466666666 0.0571654 24.0339 Root 1.39879 0.0 2.13866