condition mean min max Sterile Frond 6.333644 0.0 18.0996 Fertile Frond 2.0129099999999998 0.0 5.6823 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.843981 0.0 2.23528 Root 6.219806666666667 0.0 16.4758