condition mean min max 12pM Fe 11.265934999999999 4.17037 18.3615 58pM Fe 8.316397142857143 5.42668 11.206114285714285 233pM Fe 15.748700000000001 15.748700000000001 15.748700000000001 1160pM Fe 4.3603894047619045 2.165507142857143 6.555271666666666 Dark 6.695635433333333 5.18218 8.209090866666667 Light 6.585040153846154 6.585040153846154 6.585040153846154 Phloroglucinol 5.01856 5.01856 5.01856