condition mean min max 12pM Fe 33.141575 24.22285 42.0603 58pM Fe 26.504471428571428 20.497542857142857 32.5114 233pM Fe 18.7287 18.7287 18.7287 1160pM Fe 36.866817857142856 21.794585714285713 51.93905 Dark 17.95037466666667 17.832149333333334 18.0686 Light 15.041405384615384 15.041405384615384 15.041405384615384 Phloroglucinol 21.564 21.564 21.564