condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.32005500000000003 0.0 0.960165 Mature Stem with Root 0.0 0.0 0.0 Root 2.1222666666666665 0.0 6.3668