condition mean min max 12pM Fe 25.45285 22.348300000000002 28.5574 58pM Fe 19.22497142857143 17.753542857142858 20.6964 233pM Fe 20.7807 20.7807 20.7807 1160pM Fe 42.52741011904762 20.710328571428573 64.34449166666667 Dark 20.604497000000002 15.4682 25.740794 Light 23.004645384615383 23.004645384615383 23.004645384615383 Phloroglucinol 25.0245 25.0245 25.0245