condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.07132 0.0 3.21396 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 3.474472 0.319926 5.22645 Root 0.4727266666666667 0.0 1.41818