condition mean min max Sterile Frond 5.817799999999999 0.0 17.4534 Fertile Frond 1.4328335666666665 0.0 4.27729 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.035930666666666666 0.0 0.107792 Root 0.0 0.0 0.0