Fractional linear polarization Q/I profiles for the region around the H and K lines (left panel), and the core and near-wing region of the K line (central panel) and the H line (right panel). The considered redistribution treatment is IRCRD and the emergent profiles are shown for a LOS with μ = 0.1. The curves represent the emergent profiles for a 5L atomic model (which cannot account for J-state interference) in solid black, and a 3T model (which accounts for J-state interference) in dashed red. The reference direction for positive Stokes Q is the parallel to the nearest limb.