condition mean min max Sterile Frond 2.0359366666666667 0.0 6.10781 Fertile Frond 0.84424 0.0 2.53272 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0