condition mean min max Sterile Frond 13.69227 9.79761 15.6953 Fertile Frond 13.898900000000001 12.1395 16.8057 Young Stem with Root 7.86425 5.26811 11.6668 Mature Stem with Root 14.096666666666668 11.1041 17.2318 Root 12.01448 7.04684 16.4171