condition mean min max 12pM Fe 3.0942475 1.45177 4.736725 58pM Fe 0.0 0.0 0.0 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.03146179166666667 0.0 0.06292358333333334 Dark 0.0 0.0 0.0 Light 0.0 0.0 0.0 Phloroglucinol 0.0 0.0 0.0