Maps of physical parameters derived for the Si i line using the SIR code for the GRIS scan starting at 09:02 UT on 2016 September 24: normalized intensity I∕I₀, vertical component of magnetic flux density B_z, magnetic field azimuth ϕ, Doppler velocity v_LOS, horizontal component of magnetic flux density B_hor, and magnetic field inclination γ (top-left to bottom-right). The polarization signal in the gray region is below the noise level. The two black arcs in the normalized intensity map mark the penumbral sector PS. We note that B_z, ϕ, and γ are in the local reference frame.