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Fig. 5.


Spherically averaged foreground-subtraction power spectra errors (absolute difference) after foreground removal with GPR. The ground truth (power spectrum from directly Fourier transformed data) was subtracted from each resulting power spectrum. All k values are included. Gridding parameters are abbreviated as follows: o = oversampling factor, s = gridding kernel size, nwl = number of w layers, and p = padding factor.

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