Posterior standard deviation maps for each LFI frequency. Rows show, from top to bottom, the 30, 44 and 70 GHz frequency channels, while columns show, from left to right, the temperature and Stokes Q and U parameters. The 30 GHz standard deviation is divided by a factor of 3. Note that these maps do not include uncertainty from instrumental white noise, but only variations from the TOD-oriented parameters included in the data model in Eq. (1).