νL_ν(60   μm) vs. L_AGN of X-ray selected AGNs in 4 redshift bins from z = 0.2 to z = 2.5. Galaxies in the GOODS and COSMOS fields have been separated into right and left panels respectively, as they differ greatly in both X-ray and PACS depths. Colored points are AGNs detected in both bands. Colored numbers show the location of stacked measurements and the number of objects that go into the stack. Dashed and solid lines, as well as shaded regions, are the same as in Fig. 4. Note the apparent correlation in the colored points in the left panel, which is absent in the right panel. The correlation is primarily driven by selection effects inherent with wide and shallow surveys.