condition mean min max Sterile Frond 3.7683 0.0 11.3049 Fertile Frond 1.34455 0.0 4.03365 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.10160400000000001 0.0 0.304812 Root 0.0 0.0 0.0