condition mean min max Sterile Frond 2.9640500000000003 0.0 8.89215 Fertile Frond 0.29786666666666667 0.0 0.8936 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.3724 0.0 1.1172 Root 0.0 0.0 0.0