Top left: temperature radial profile along the $S$ direction (black) and average temperature profile (blue). Top right: average metallicity profile. Bottom left: metallicity profile along the S. Bottom right: ratio of the metallicity profile toward the S to the average metallicity profile. The vertical blue line indicates the end of the tail as determined from the X-ray residual map (Fig. 7). The red and green vertical lines in the average metallicity plot indicate the position of the NW and SW edges, respectively.