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Fig. 4

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Effect of the four denoising methods on the noise properties of the original data. Each panel shows the normalized histograms of residual images, i.e., the difference between the original noisy data and the denoised data. The red line shows the best-fit Gaussian. In each case, the χ2 of the fit is indicated. The mean SNR in the image selected to compute the histogram is SNR = 0.38.

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