PRS values (purple triangles), their errors and the significance threshold (horizontal bars) computed between starlight polarisation and depolarisation canals in the region east from RA 23^h15^m. Orange marks represent Δψ and the associated error. The result for each bin is represented by a point at its lower border. The lighter shaded area represents all bins in which we find alignment, while the darker shaded area marks the estimated range for the minimum distance to the structures.