IIPolarization properties for the standard calibrators from Perley & Butler (2013a,b). Top row: observed values of I, p_l, and χ, along with the best-fit functions. Bottom row: Stokes quantities q = Q/I, u = U/I, and q − u plane, respectively. The shaded gray area in the panels highlights the wavelength range covered by our synthetic Faraday rotation observations. This range corresponds to the frequency interval of 1-5 GHz.