condition mean min max 12pM Fe 45.4144 42.3952 48.4336 58pM Fe 29.581807142857144 29.426614285714287 29.737 233pM Fe 22.244133333333334 22.244133333333334 22.244133333333334 1160pM Fe 31.090396428571427 27.070349999999998 35.11044285714286 Dark 22.805922000000002 16.5972 29.014644 Light 29.087416153846153 29.087416153846153 29.087416153846153 Phloroglucinol 27.8301 27.8301 27.8301