WPH statistics of the input and output maps for the component separation applied on the mock data. The WPH statistics of , , , and are compared. The 〈•〉_i notes the mean of the WPH statistics computed over the 9 separations done using different sub-maps (see Sect. 4.1 for mock data construction). The colored bands represent ±1σ error-bars, computed as the standard deviation of these statistics.