condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.39122666666666667 0.0 1.17368 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.150316 0.251218 4.47286 Root 0.147308 0.0 0.441924