condition mean min max 12pM Fe 29.75215 24.7769 34.7274 58pM Fe 30.59047857142857 28.295257142857142 32.8857 233pM Fe 59.2323 59.2323 59.2323 1160pM Fe 22.822847321428572 20.921757142857142 24.7239375 Dark 35.272499999999994 32.7998 37.7452 Light 21.255153846153846 21.255153846153846 21.255153846153846 Phloroglucinol 19.075499999999998 19.075499999999998 19.075499999999998