condition mean min max Sterile Frond 2.74909 0.0 6.12048 Fertile Frond 2.06388 0.0 3.81029 Young Stem with Root 0.38737 0.0 1.16211 Mature Stem with Root 1.4650096666666665 0.0 3.52236 Root 1.000386 0.0 2.58327