condition mean min max Sterile Frond 9.7135 0.0 18.4436 Fertile Frond 10.143403333333334 0.0 21.4101 Young Stem with Root 7.588013333333333 0.0 20.4835 Mature Stem with Root 5.22899 0.63144 8.69831 Root 2.15899 0.0 3.33499