condition mean min max Sterile Frond 0.012619199999999999 0.0 0.0378576 Fertile Frond 0.043253099999999996 0.0 0.0866564 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.12952766666666668 0.0 0.388583 Root 2.5862366666666667 0.0 7.75871