condition mean min max Sterile Frond 0.13172666666666666 0.0 0.39518 Fertile Frond 3.8505766666666665 0.0 10.6289 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 4.46937 0.0 8.04441 Root 0.5409499999999999 0.0 1.62285