condition mean min max Sterile Frond 7.494583933333333 0.0885078 22.2416 Fertile Frond 6.031656999999999 0.0 17.7155 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.142327 0.0 0.251861 Root 0.0509683 0.0 0.113937