condition mean min max Sterile Frond 0.136404 0.0 0.409212 Fertile Frond 2.64332 0.0 7.92996 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.907535 0.0 2.20919 Root 0.204982 0.0 0.614946