condition mean min max Sterile Frond 0.16155166666666668 0.0 0.484655 Fertile Frond 4.5845 0.0 11.7908 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.8456366666666668 0.0 4.49821 Root 0.0 0.0 0.0