condition mean min max 12pM Fe 29.461075 21.11815 37.804 58pM Fe 21.080464285714285 12.778528571428572 29.3824 233pM Fe 8.850570000000001 8.850570000000001 8.850570000000001 1160pM Fe 12.323176547619049 5.0606816666666665 19.58567142857143 Dark 10.357290733333333 8.30136 12.413221466666666 Light 12.004831615384616 12.004831615384616 12.004831615384616 Phloroglucinol 29.3161 29.3161 29.3161