condition mean min max Sterile Frond 0.0 0.0 0.0 Fertile Frond 1.34426 0.0 4.03278 Young Stem with Root 0.07172066666666667 0.0 0.215162 Mature Stem with Root 5.333886666666666 0.0 13.6871 Root 6.6345600000000005 0.0 13.5463