condition mean min max Sterile Frond 0.19043233333333334 0.0 0.360354 Fertile Frond 2.171189 0.0 6.29937 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