condition mean min max 12pM Fe 64.651025 55.4574 73.84465 58pM Fe 64.60274285714286 61.7348 67.47068571428571 233pM Fe 52.221 52.221 52.221 1160pM Fe 40.93454642857142 20.62325 61.245842857142854 Dark 29.942686666666667 25.436 34.449373333333334 Light 29.765240769230772 29.765240769230772 29.765240769230772 Phloroglucinol 66.5493 66.5493 66.5493