condition mean min max Sterile Frond 1.173966 0.0 3.22736 Fertile Frond 5.246918 0.0 15.393 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 4.723554333333333 0.152089 13.2341 Root 0.38538 0.0 1.15614