condition mean min max 12pM Fe 51.828725000000006 49.4361 54.22135 58pM Fe 43.795028571428574 43.1753 44.41475714285714 233pM Fe 31.677500000000002 31.677500000000002 31.677500000000002 1160pM Fe 24.37795892857143 20.467875 28.28804285714286 Dark 18.5124 16.5185 20.5063 Light 11.313274615384616 11.313274615384616 11.313274615384616 Phloroglucinol 17.0682 17.0682 17.0682