condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 5.035966666666667 0.0 15.1079 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.642968 0.0 1.8068 Root 0.6387533333333334 0.0 1.91626