condition mean min max 12pM Fe 34.3232 30.2805 38.3659 58pM Fe 24.175735714285715 22.945271428571427 25.4062 233pM Fe 23.5789 23.5789 23.5789 1160pM Fe 18.520587619047618 10.984646666666666 26.056528571428572 Dark 22.110118999999997 20.5129 23.707338 Light 15.649979230769231 15.649979230769231 15.649979230769231 Phloroglucinol 13.6893 13.6893 13.6893