condition mean min max 12pM Fe 39.515100000000004 35.3866 43.6436 58pM Fe 29.170221428571427 28.3588 29.981642857142855 233pM Fe 23.8969 23.8969 23.8969 1160pM Fe 22.415372619047616 20.139216666666666 24.69152857142857 Dark 18.437192000000003 16.8822 19.992184 Light 12.511133923076923 12.511133923076923 12.511133923076923 Phloroglucinol 24.5117 24.5117 24.5117