condition mean min max 12pM Fe 62.96495 52.0082 73.9217 58pM Fe 53.073235714285715 37.89317142857143 68.2533 233pM Fe 48.7851 48.7851 48.7851 1160pM Fe 50.48326369047619 37.17044166666667 63.79608571428572 Dark 65.03799 55.53508 74.5409 Light 57.10799230769231 57.10799230769231 57.10799230769231 Phloroglucinol 63.6424 63.6424 63.6424