condition mean min max 12pM Fe 31.624474999999997 12.8565 50.39245 58pM Fe 31.633917857142855 6.18505 57.08278571428571 233pM Fe 46.129799999999996 46.129799999999996 46.129799999999996 1160pM Fe 36.49055809523809 7.535182857142857 65.44593333333333 Dark 22.309930666666666 12.1697 32.450161333333334 Light 9.55774923076923 9.55774923076923 9.55774923076923 Phloroglucinol 18.2636 18.2636 18.2636