Periodogram of the residuals from the fits to the RV datasets of GJ 3512, GJ 317, GJ 463, and GJ 9773 (from top to bottom). In each panel the solid black line corresponds to the joint periodogram of all datasets, while solid lines depict the periodogram for each individual dataset as labelled. The top panel for each target illustrates the window function. Solid horizontal grey lines show the 0.1% (dashed), 1% (dot-dashed), and 10% (dotted) FAP levels.