Same as Fig. 8, but for inclinations of −90° to 90°. The upper and middle panels correspond to the power spectrum of the original data, whilst the lower panel yields the power spectrum of the time series detrended for the long-term cycle. The blue dashed lines in each panel illustrate the 99% significance level for the original time series, whilst the red dashed line in the bottom panel corresponds to the 99% significance level of the detrended time series. The magenta vertical lines in the top and bottom panel indicate the Carrington rotation frequency.