condition mean min max 12pM Fe 0.0 0.0 0.0 58pM Fe 1.9786 0.0 3.9572 233pM Fe 0.0 0.0 0.0 1160pM Fe 0.0 0.0 0.0 Dark 5.198236666666666 0.0 10.396473333333333 Light 8.259461538461538 8.259461538461538 8.259461538461538 Phloroglucinol 14.2291 14.2291 14.2291