Signal quality factors calculated from fitting original (n = 1) data for each slit (red), and from fitting the bandpass filtered data in blue (n = 3). Diamonds show the quality factor value, and error estimates calculated using the credible intervals for τi and Pi propagated through standard error formula are shown in red for n = 1, and blue for n = 3. The purple region denotes the region in which the n = 3 node lies.
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