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Figure 16
(a) The raw Fourier cosine coefficients obtained from the decomposition of the profile in Fig. 14 using a general FFT algorithm (solid dots). All coefficients obtained from the DFT code (open diamonds) are overlaid for comparison. (b) An expanded plot of the shaded box in panel (a). In this range, with the exception of the zeroth-order coefficient [A_0^{\prime}], the [A_n^{\prime}] from the DFT code are twice those obtained from the FFT code.

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