Spectra of the whole SNR, box2, and SR regions fit with spectrum models with variable abundances of Ne, Mg, Si, and Fe (the Ni abundance was assumed equal to Fe). Upper left panel: spectrum of the whole SNR with the VAPEC model. Upper right panel: spectrum of the box2 region with the VAPEC model. Lower left panel: spectrum of the SR region with the VAPEC model. Lower right panel: spectrum of the SR region with the high-temperature VPSHOCK model. Each panel shows the spectrum data (black) and model (red) in the upper graph and the residuals in the lower graph. The model parameters for these spectra are given in Table 5.