condition mean min max 12pM Fe 12.978075 11.880849999999999 14.0753 58pM Fe 6.596592142857142 5.680974285714286 7.51221 233pM Fe 6.800473333333334 6.800473333333334 6.800473333333334 1160pM Fe 4.585241428571429 2.09452 7.075962857142857 Dark 3.704365 3.2674 4.14133 Light 3.0170995384615384 3.0170995384615384 3.0170995384615384 Phloroglucinol 3.31432 3.31432 3.31432