condition mean min max 12pM Fe 9.1808225 7.87807 10.483575 58pM Fe 23.910124285714286 8.21322 39.60702857142857 233pM Fe 3.2092199999999997 3.2092199999999997 3.2092199999999997 1160pM Fe 7.778514880952381 7.425818333333333 8.13121142857143 Dark 10.612485333333334 9.25262 11.972350666666667 Light 4.846953384615385 4.846953384615385 4.846953384615385 Phloroglucinol 24.061799999999998 24.061799999999998 24.061799999999998