moderately significantp < 0.01
In both statistical analyses, the significance was set at three levels for descriptive purposes: slightly significant for p < 0.05 (green), moderately significant for p < 0.01 (yellow), and highly significant for p < 0.001 (orange). 3 Results and Discussion The section is organized presenting first the results for the AA phase followed by the findings in the TPH and steady SupplO 2 phases.