condition mean min max 12pM Fe 17.2006 16.0069 18.3943 58pM Fe 13.0548 11.7944 14.3152 233pM Fe 25.4966 25.4966 25.4966 1160pM Fe 19.294256904761905 9.809397142857142 28.779116666666667 Dark 20.936177 15.1251 26.747253999999998 Light 23.432971615384616 23.432971615384616 23.432971615384616 Phloroglucinol 7.07219 7.07219 7.07219