condition mean min max 12pM Fe 166.728425 78.07785 255.379 58pM Fe 119.81594285714286 73.61188571428572 166.02 233pM Fe 120.75410000000001 120.75410000000001 120.75410000000001 1160pM Fe 103.20130119047619 35.29731666666667 171.1052857142857 Dark 111.80035666666666 88.09671333333333 135.504 Light 71.48967692307693 71.48967692307693 71.48967692307693 Phloroglucinol 27.69526 27.69526 27.69526