condition mean min max Sterile Frond 6.8052 0.0 20.4156 Fertile Frond 1.86201 0.0 3.0918 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.2887306666666667 0.0 3.58305 Root 0.63422 0.0 1.90266