Table 3: The best-fit parameters for the central region of RXC J2228.6+2036 by Model₂. The lowT is fixed on 0.01 keV and 1'=332.7 kpc. The errors are at the 90% confidence level.
r $T_{\rm mekal}$ Low $T_{\rm cf}$ High $T_{\rm cf}$ A Norm $\dot{M}$ $\Delta n_{\rm H}$ $\chi^{2}_{{\rm red}}$ / ${\rm d.o.f.}$

(keV) (keV) (keV) (solar) (10^-3 cm^-5) ( $M_{\odot}$ ) (10²² cm^-2)

0'-0.5' $\rm 8.54^{+2.27}_{-1.18}$ 0.01 (fix) = $T_{\rm mekal}$ $0.32\pm0.19$ $\rm0.70^{+0.05}_{-0.12}$ $\rm 14.0^{+64.0}_{-14.0}$ 0.0(fix) 1.12/250

**Table 3:** The best-fit parameters for the central region of RXC J2228.6+2036 by *Model*₂. The *lowT* is fixed on 0.01 keV and 1'=332.7 kpc. The errors are at the 90% confidence level.
r	$T_{\rm mekal}$	Low $T_{\rm cf}$	High $T_{\rm cf}$	A	Norm	$\dot{M}$	$\Delta n_{\rm H}$	$\chi^{2}_{{\rm red}}$ / ${\rm d.o.f.}$
	(keV)	(keV)	(keV)	(solar)	(10^-3 cm^-5)	( $M_{\odot}$ )	(10²² cm^-2)
0'-0.5'	$\rm 8.54^{+2.27}_{-1.18}$	0.01 (fix)	= $T_{\rm mekal}$	$0.32\pm0.19$	$\rm0.70^{+0.05}_{-0.12}$	$\rm 14.0^{+64.0}_{-14.0}$	0.0(fix)	1.12/250

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