Fig. 4.
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Top: S/N of the angular power spectrum as a function of the survey area for WL (short dashes), GCph (long dashes), and GCph+WL+XC (plain line). The fSKY approximation is shown in blue, the partial sky computation which accounts for the mask is shown in red, and the Gaussian case is shown in green. Bottom: relative difference in percent between the blue and the red lines.
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