condition mean min max Sterile Frond 0.239522 0.0 0.718566 Fertile Frond 2.251306666666667 0.0 6.75392 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.11699966666666667 0.0 0.350999 Root 0.0 0.0 0.0