condition mean min max 12pM Fe 67.879075 62.0089 73.74924999999999 58pM Fe 66.5395 38.649 94.43 233pM Fe 26.942666666666668 26.942666666666668 26.942666666666668 1160pM Fe 33.685087499999995 28.105674999999998 39.2645 Dark 28.221359 27.035718 29.407 Light 19.408459999999998 19.408459999999998 19.408459999999998 Phloroglucinol 9.83632 9.83632 9.83632