condition mean min max Sterile Frond 2.5416600000000003 0.0 6.52102 Fertile Frond 0.43817466666666666 0.0 0.987993 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.11441666666666667 0.0 0.34325 Root 0.0 0.0 0.0