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 0.0019521833333333333 0.0 0.0039043666666666666 Light 0.0038212384615384618 0.0038212384615384618 0.0038212384615384618 Phloroglucinol 0.0 0.0 0.0