condition mean min max Sterile Frond 3.1255433333333333 0.0 7.37559 Fertile Frond 0.39396566666666666 0.0 0.988597 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0