condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.134234 0.0 0.402702 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 16.387533333333334 0.0 49.1626 Root 0.256895 0.0 0.770685