condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.0 0.0 0.0 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.019309875 0.0 0.03861975 Dark 0.05813783333333333 0.0 0.11627566666666667 Light 0.07043476923076923 0.07043476923076923 0.07043476923076923 Phloroglucinol 0.605787 0.605787 0.605787