Temperature maps obtained by X-ray spectral analyses with the ContBin-defined regions in units of keV. The left panel shows the raw temperature map. The statistical error of the inner/outer regions in the map are 7%/15%, respectively. The right panel shows the smoothed image of the left panel with ﹩7^{\prime\prime} ﹩ Gaussian, together with the contours overlaid of the spiral patterns as in the right panel of Figure 2.