condition mean min max Sterile Frond 0.0225332 0.0 0.0675996 Fertile Frond 0.013952366666666667 0.0 0.0418571 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.36142 0.0 1.08426 Root 6.089187 0.0 18.117