condition mean min max 12pM Fe 35.8859 29.591 42.1808 58pM Fe 19.364040714285714 13.087081428571429 25.641 233pM Fe 10.75164 10.75164 10.75164 1160pM Fe 13.539246011904762 4.123049166666667 22.955442857142856 Dark 8.912948 8.909836 8.91606 Light 9.048252307692307 9.048252307692307 9.048252307692307 Phloroglucinol 15.09436 15.09436 15.09436