condition mean min max Sterile Frond 6.781409999999999 0.0 16.1241 Fertile Frond 7.040570000000001 0.0 17.4661 Young Stem with Root 12.816036666666667 0.0 29.4071 Mature Stem with Root 13.534936666666667 0.0 33.1836 Root 5.566565000000001 0.0 16.5819