condition mean min max Sterile Frond 0.24121499999999998 0.0 0.723645 Fertile Frond 3.1278723333333334 0.0 8.65087 Young Stem with Root 0.0 0.0 0.0 Mature Stem with Root 1.0786733333333334 0.0 2.20919 Root 0.0 0.0 0.0