Example of the instrumental linear polarization correction for an elevation sub-scan at 4.85 GHz. The observed COS/SIN (or equivalently Q_elv/U_elv) signals are shown with red in the middle and bottom rows, immediately below the LCP signal, while the corrected signals are shown with blue immediately below the RCP signal. The correction is performed by subtracting the expected instrumental polarization signals (smooth black lines) from the observed Q_elv and U_elv data sets (2nd and 3rd column of the middle and bottom rows). The instrumental polarization signals are calculated by substituting the measured mean amplitude I, peak offset μ, and FWHM σ of the LCP and RCP signals (top row) in the instrument model M created for the given observing session.