condition mean min max 12pM Fe 7.442875000000001 5.43874 9.44701 58pM Fe 11.187212142857144 6.07938 16.295044285714287 233pM Fe 6.3114099999999995 6.3114099999999995 6.3114099999999995 1160pM Fe 6.289336428571429 5.7963128571428575 6.78236 Dark 4.9305731999999995 2.44221 7.4189364 Light 6.440663076923077 6.440663076923077 6.440663076923077 Phloroglucinol 5.6030766666666665 5.6030766666666665 5.6030766666666665