Fig. 6
CCF maximum amplitude versus S/N for HR10 (left panel) and for HR21 (right panel). Solid red lines are the criteria on the S/N (vertical, S/N = 5) and on the lowest value of the CCF maximum (horizontal, 0.15). The grey area shows the observations excluded from the analysis. The number of single exposures in each setup is given in the top left corner.
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