\begin{table}%t3
\caption{\label{table:rgs_fit}RGS spectral fits to the persistent emission.}
%%\centering
\par
\par
\begin{tabular}{lcccc|ccc}
\hline\hline 
&&\multicolumn{3}{c|}{}&&\\[-2.5mm]
&& \multicolumn{3}{c|}{Mod A\tablefootmark{a}}   & Mod B & Mod C \\
Component             & Parameter                              & OBS 1         & OBS 2         & OBS 1+2        & OBS 1+2         & OBS 1+2 \\ \hline
&&&&&&&\\[-2.8mm]
\multirow{7}{*}{Cold} & $N_{\rm H} ~ (10^{25}~{\rm m}^{-2})$  & $4.18\pm0.01$ & $4.22\pm0.07$ & $4.21\pm0.09$  & $3.88\pm0.07$   & $3.94\pm0.05$ \\
                      & $kT$ ($10^{-4}$ keV)                   & $5.90\pm0.14$ & $6.13\pm0.12$ & $6.02\pm0.09$  & $6.04\pm0.10$   & $8.6\pm0.4$ \\
                      & $\sigma_V$ (km s$^{-1}$)               & $27\pm15$     & $18\pm6$      & $13\pm7$       & $<$12.6        & $<$24         \\
                      & O                                      & $1.30\pm0.02$ & $1.29\pm0.02$ & $1.29\pm0.01$  & $1.29\pm0.02$   & $1.17\pm0.03$\\
                      & Ne                                     & $2.08\pm0.04$ & $1.86\pm0.07$ & $1.95\pm0.07$  & $2.19\pm0.10$   & $1.75\pm0.11$\\
                      & Mg                                     & $2.27\pm0.12$ & $2.14\pm0.16$ & $2.21\pm0.16$  & $1.93\pm0.15$   & $1.30\pm0.25$\\
                      & Fe                                     & $1.39\pm0.02$ & $1.42\pm0.06$ & $1.39\pm0.05$  & $1.65\pm0.08$   & $<$0.1 \\
\hline
&&&&&&&\\[-2.8mm]
\multirow{3}{*}{Warm} & $N_{\rm H} ~ (10^{25}~{\rm m}^{-2})$  & --             & --             & --              & $0.46 \pm 0.06$ & $0.15 \pm 0.05$\\
                      & $kT$ ($10^{-3}$ keV)                   &    --          &     --         & --              & $5.4\pm0.3$     & $4.5\pm0.5$ \\
                      & $\sigma_V$ (km s$^{-1}$)               & --             &   --           &  --             & $50\pm25$       & $<$150 \\
\hline 
&&&&&&&\\[-2.8mm]
\multirow{3}{*}{Hot}  & $N_{\rm H} ~ (10^{25}~{\rm m}^{-2})$  & --             & --             &   --            & $0.042\pm0.008$ & $0.047\pm0.011$\\
                      & $kT$ (keV)                             &  --            & --             &    --           & $ 0.20\pm0.02 $ & $0.20\pm0.03$\\
                      & $\sigma_V$ (km s$^{-1}$)               & --             & --             &     --          & $<$160         & $<$200 \\
\hline
\multirow{2}{*}{Dabs\tablefootmark{b}} & $N_{\rm Fe}$ & -- & -- & -- & -- & $2.6\pm0.1$ \\
                               & $N_{\rm Mg}$ & -- & -- & -- & -- & $2.3\pm0.1$ \\
\hline
\multirow{4}{*}{Amol\tablefootmark{b,~c}} & $N_{\rm O}$ ($i=14$, Silicates)  & -- & -- & -- & -- & $2.5\pm0.5$ \\
                               & $N_{\rm O}$ ($i=7$, H$_2$O Ice)        & -- & -- & -- & -- & $<$0.7\\
                               & $N_{\rm O}$ ($i=2$, CO)         & -- & -- & -- & -- & $<$0.4 \\
                               & $N_{\rm O}$ ($i=23$, Aluminates) & -- & -- & -- & -- & $<$0.4 \\
\hline
\multirow{2}{*}{Statistics} & C-Stat / d.o.f.     & $2239/1595$   & $2170/1589$ & $4587/3232$ & $4435/3226$  & {4818/3398} \\
                            & C-Stat / d.o.f. (*) & $2930/1684$   & $3040/1710$ & $5757/3410$ & $6064/3404$  & {4818/3398} \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{We give the separate fits for the two observations only for Model A in order to show that they are consistent within the errors and thus can be fitted together. C-Stat/d.o.f. (*) Refers to the statistics obtained by including the wavelength ranges 17.2--17.7~{\AA} and 22.7--23.2~{\AA}, which in fits are ignored except in the case of the complete model. \tablefoottext{b}{All columns for the {\it dabs} and {\it amol} components are reported in units of $10^{21}~{\rm m}^{-2}$.} \tablefoottext{c}{Each {\it amol} component is displayed together with its molecular index as reported in Table~\ref{tab:amol}.}}}
\end{table}