Overview of polarisation data of the G035.39-00.33 region. The three rows show, respectively, Planck data at 5′ resolution, POL-2 data at 40′′ resolution, and POL-2 data at 20′′ resolution. The seven frames on each row are: I, Q, U, polarised intensity P, polarisation fraction p_mas, polarisation angle ψ, and polarisation angle dispersion function S for a lag of δ = FWHM/2. The dashed boxes on Planck maps correspond to the size of the second row images. The column densities N(H₂) = 10²² cm⁻² (at the corresponding resolutions) are indicated with contours on the I maps. On the second and third rows, these are calculated from background-subtracted Herschel and SCUBA-2 data. The white contours on the P maps correspond to an intensity I(850μm) of 40 mJy sr⁻¹ on the Planck map and 10 mJy sr⁻¹ on the POL-2 maps.