condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 0.0 0.0 0.0 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 8.144783333333333 1.20605 11.8337 Root 18.33269 5.41567 28.2132