Upper panel: Occurrence rate of the detection of cosine amplitudes δ/2 less than δ₀/2 in the presence of injected cosine amplitudes d_inj/2. The Gaussian components of the mock signals were generated using the standard deviations of the SAP and PDC time series (first and last rows in Table B.1). The δ₀ values refer to the respective total amplitudes in the same table (i.e., 0.086,0.106 ppt for the SAP and PDC data, respectively). Lower panel: Occurrence rate of phase difference Δφ for the same noise models as above but injected by box signals of depths d_inj and widths of 2ϵ = 0.060.