\begin{table}%t4%t5
\caption{\label{tab:spectra0023}Spectral parameters of the best-fit models to the average spectra of IGR~0023. Errors are given at the $90\%$ confidence level.}
\par
\small%%\centerline

 {
\begin{tabular}{llllllllllllll}
\hline\hline       
%&&&&&&&&&&&&& \\[-8pt]
& $N_{{\rm H}}$$^a$ &
$N_{{\rm H}}$$^b$ &
$C_{\rm F}$$^c$ &
$A_Z$$^d$ &
$\alpha$$^e$ &
$k T_1$ &
$C_1$$^f$ &
$k T_2$ &
$C_2$$^g$ &
$k T_3$$^h$ &
$C_3$$^i$ &
$EW^j$ &
$\chi_{\nu}^2$ \\
 & & & & & & (keV) & & (keV) & & (kev) & & (eV) & ($\chi^2$ / d.o.f.) \\
\hline
%&&&&&&&&&&&&& \\[-8pt]
A & $1.79 \pm 0.07$ & $0.8 \pm 0.2$ & $0.39_{\rm -0.06}^{+0.05}$ & $0.7 \pm 0.2$ & $1.8_{\rm -0.4}^{+0.6}$
& & & & & $28_{\rm -11}^{+19}$ & $1.7_{\rm -0.5}^{+1.3}$ & $100_{\rm -25}^{+30}$ & 0.86 (892/1033)\\
B & $2.0 \pm 0.1$ & $1.1_{\rm -0.2}^{+0.3}$ & $0.44 \pm 0.04$ & $0.5 \pm 0.1$ & & $0.17_{\rm -0.04}^{+0.02}$ &
$3.0_{\rm -1.7}^{+3.3}$ & $14 \pm 2$ & $5.2_{\rm -0.3}^{+0.2}$ & & & $100_{\rm -29}^{+24}$ & 0.86 (886/1032) \\
C & $2.0 \pm 0.1$ & $0.9_{\rm -0.2}^{+0.3}$ & $0.36 \pm 0.06$ & $0.7_{\rm -0.2}^{+0.3}$ & &
$0.17_{\rm -0.05}^{+0.03}$ & $1.5_{\rm -1.0}^{+2.3}$ & $9_{\rm -3}^{+2}$ & $2.1_{\rm -0.9}^{+1.5}$ &
${>}27$ & $0.3 \pm 0.1$ & $94_{\rm -27}^{+24}$ & 0.85 (870/1030) \\[2pt]
\hline
\end{tabular}}
\medskip
$^a$ Column density of the total absorber in units of $10^{21}~{\rm cm}^{-2}$;
$^b$~column density of the partial absorber in units of~$10^{23}~{\rm cm}^{-2}$;  
$^c$~covering fraction of the partial absorber; 
$^d$~metal abundance; 
$^e$~index of the power-law emissivity function of the CEMEKL~component;
$^f$~normalization constant of the first optically thin plasma component in units of~$10^{-4}$;
$^g$~normalization constant of the second optically thin plasma component in units of~$10^{-3}$;
$^h$~in model~A this the maximum temperature of the~CEMEKL;
$^i$~normalization constant of the third optically thin plasma component (CEMEKL in model~A) in units of~$10^{-2}$;
$^j$~equivalent width of the 6.4~keV Fe~line. 
\end{table}