condition mean min max Sterile Frond 0.433712 0.0 0.743124 Fertile Frond 0.29134766666666667 0.0 0.874043 Young Stem with Root 5.9326 0.0 17.7978 Mature Stem with Root 2.063424 0.884062 4.02939 Root 8.3302 0.0 24.9906