condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.16869466666666666 0.0 0.506084 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.346044666666667 0.0 6.24701 Root 0.0 0.0 0.0