condition mean min max 12pM Fe 14.214775 12.59845 15.8311 58pM Fe 9.758835714285715 8.622471428571428 10.8952 233pM Fe 13.1481 13.1481 13.1481 1160pM Fe 6.56711975 4.7407295 8.393510000000001 Dark 10.693456333333334 8.16665 13.220262666666667 Light 9.171473076923077 9.171473076923077 9.171473076923077 Phloroglucinol 6.32868 6.32868 6.32868