condition mean min max Sterile Frond 15.928503333333333 0.0 39.4561 Fertile Frond 1.7188780000000001 0.0 4.46292 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 0.0 0.0 0.0 Root 0.0 0.0 0.0