condition mean min max 12pM Fe 7.481210000000001 6.05451 8.907910000000001 58pM Fe 5.847051428571429 2.88471 8.809392857142857 233pM Fe 13.8798 13.8798 13.8798 1160pM Fe 5.725041130952381 3.1824108333333334 8.267671428571429 Dark 5.151542166666666 3.4919143333333333 6.81117 Light 1.1218372307692308 1.1218372307692308 1.1218372307692308 Phloroglucinol 7.33794 7.33794 7.33794