condition mean min max Sterile Frond 6.602436666666666 0.0 18.0099 Fertile Frond 1.9834686666666665 0.0 5.77816 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