condition mean min max Sterile Frond 2.2378666666666667 0.0 4.85169 Fertile Frond 4.65049 2.99876 7.59305 Young Stem with Root 0.8362139999999999 0.0 2.14151 Mature Stem with Root 2.446886666666667 0.0 5.52582 Root 6.802401000000001 0.200013 18.8651