condition mean min max 12pM Fe 6.6147025 1.42669 11.802715 58pM Fe 8.455456428571429 2.94561 13.965302857142857 233pM Fe 31.1037 31.1037 31.1037 1160pM Fe 8.57253157142857 1.4859181428571429 15.659144999999999 Dark 29.1753183 25.5016 32.8490366 Light 15.366687769230769 15.366687769230769 15.366687769230769 Phloroglucinol 5.15668 5.15668 5.15668