Polarization contours from Obs. 4. Contours represent the significance of the time-averaged polarization detected with confidence levels of 68.27%, 90.00%, and 99.00%, with two degrees of freedom. The blue contour indicates the values of Π_X and ψ_X derived via the PCUBE methods, and the red contours show the same properties from simultaneous IXPE and XMM-Newton spectropolarimetric analysis. The radial and angular values represent Π_X and ψ_X, respectively, with the latter measured from north through east.