condition mean min max Sterile Frond 0.69012 0.0 2.07036 Fertile Frond 4.491586666666667 0.0 11.3932 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.5262 0.0 1.5786 Root 0.0 0.0 0.0