condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 17.6782 0.0 53.0346 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.2892246666666667 0.0 0.61917 Root 1.400957 0.752241 2.16114