condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0146552 0.0 0.0439656 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.2402896666666665 0.0 6.58666 Root 2.16284 0.0 6.48852