Fig. B.2

HD 218860 jitter and offset correction. (a) RV time variations. (b) RV vs. BVS. The best linear fit is presented in red dashed line. (c) RV corrected from the RV-BVS correlation. HARPS fiber change is shown with a vertical red line. (d) RVtime variations corrected from the offset due to the HARPS fiber change. (e) RV corrected from offset vs. BVS. The best linear fit is presented in red dashed line. (f) RV corrected from offset, corrected from their correlation to the BVS. HARPS fiber change is shown with a vertical red line.
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