condition mean min max Sterile Frond 1.5732080000000002 0.0 4.02294 Fertile Frond 1.4268943333333333 0.0 3.46104 Young Stem with Root 2.0034733333333334 0.0 6.01042 Mature Stem with Root 0.0 0.0 0.0 Root 7.2136 0.0 21.6408