condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 7.555883 0.147119 19.2059 Root 0.9091066666666666 0.0 1.70198