Polarization images in the FeI 630.15 nm line. The 1024-pixel spectrograph slit was orientated along the north-south solar axis and scanned 380 positions along the east-west direction. Left panel: southern solar limb, right panel: solar disk center. The colors are coded according to the logarithm of the total polarization normalized by its mean value over the image. Color code: the mean polarization in the image is coded in black. The logarithmic polarization range in each image is divided into four intervals indicated by four colors, red: [Mean + (Max − Mean)/2;Max], magenta: [Mean;Mean + (Max − Mean)/2], cyan: [Mean − (Mean − Min)/2;Mean], blue: [Min;Mean − (Mean − Min)/2]. Max and Min denote, respectively, the maximum and minimum of the normalized polarization in the image on a logarithmic scale. At the limb, Max/Mean = 17.01 and Min/Mean = 0.52; at disk center Max/Mean = 24.32 and Min/Mean = 0.44.