condition mean min max 12pM Fe 18.29785 12.932300000000001 23.6634 58pM Fe 10.444648571428573 8.572597142857143 12.3167 233pM Fe 8.00609 8.00609 8.00609 1160pM Fe 9.747636369047619 5.086144166666667 14.409128571428571 Dark 7.849608466666666 6.651666933333333 9.04755 Light 7.0766705384615385 7.0766705384615385 7.0766705384615385 Phloroglucinol 4.29379 4.29379 4.29379