Net circular polarization signals. Panel a: stokes profiles at the center of the slit located at μ = 0.1. After averaging 8 spatial pixels, each profile covers 11.2″ along the slit. The ID of the observation is 09. Panel b: stokes profiles at the center of the slit located at μ = 0.09. After averaging 9 spatial pixels, each profile covers 12.6″ along the slit. The ID of the observation is 11. The spatial variation of the Stokes profiles is along the slit for different observations. A binning of 12 pixels in the spectral dimension was applied in both observations.