condition mean min max 12pM Fe 39.92252499999999 35.5622 44.282849999999996 58pM Fe 28.01965714285714 27.151514285714285 28.8878 233pM Fe 38.854 38.854 38.854 1160pM Fe 25.942074047619048 18.811576666666667 33.07257142857143 Dark 46.30856 34.82992 57.7872 Light 48.339393384615384 48.339393384615384 48.339393384615384 Phloroglucinol 28.973 28.973 28.973