condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.82742 0.0 2.48226 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.7063516666666665 0.708325 4.64063 Root 0.9766536333333333 0.0 2.90534