condition mean min max Sterile Frond 6.2062333333333335 0.0 18.6187 Fertile Frond 5.965933333333333 0.0 17.8978 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0