condition mean min max Sterile Frond 0.72148 0.0 2.16444 Fertile Frond 0.12174499999999999 0.0 0.365235 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 2.0062599999999997 0.0 6.01878 Root 0.0 0.0 0.0