condition mean min max 12pM Fe 9.0517975 7.5719 10.531695 58pM Fe 12.891119285714286 9.49162 16.29061857142857 233pM Fe 7.5382 7.5382 7.5382 1160pM Fe 3.4188866607142856 1.96140475 4.876368571428571 Dark 5.31147 5.12669 5.49625 Light 2.9419848461538463 2.9419848461538463 2.9419848461538463 Phloroglucinol 4.057043333333334 4.057043333333334 4.057043333333334