condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 0.0 0.0 0.0 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.0 0.0 0.0 Dark 0.11885816666666667 0.0 0.23771633333333334 Light 0.0 0.0 0.0 Phloroglucinol 0.0 0.0 0.0