condition mean min max 12pM Fe 33.45445 23.307000000000002 43.6019 58pM Fe 26.319442857142857 13.812985714285714 38.8259 233pM Fe 11.2795 11.2795 11.2795 1160pM Fe 15.358902380952381 2.8036333333333334 27.91417142857143 Dark 13.598906 12.127812 15.07 Light 9.886375846153847 9.886375846153847 9.886375846153847 Phloroglucinol 10.50867 10.50867 10.50867