condition mean min max 12pM Fe 44.3101275 6.652755 81.9675 58pM Fe 39.346225714285715 2.4097514285714285 76.2827 233pM Fe 5.82775 5.82775 5.82775 1160pM Fe 21.340513154761904 6.4141691666666665 36.26685714285714 Dark 26.869945666666666 24.543 29.196891333333333 Light 26.325877769230768 26.325877769230768 26.325877769230768 Phloroglucinol 77.7913 77.7913 77.7913