condition mean min max 12pM Fe 23.25275 22.5245 23.981 58pM Fe 14.144321428571429 14.068442857142857 14.2202 233pM Fe 12.5732 12.5732 12.5732 1160pM Fe 5.82088375 3.4037975 8.23797 Dark 6.360250000000001 5.34628 7.37422 Light 3.877973846153846 3.877973846153846 3.877973846153846 Phloroglucinol 3.3830533333333337 3.3830533333333337 3.3830533333333337