\begin{table}%t5
\caption{\label{tab:tableGX9+1_par}Best-fit parameters of the multi-component model $\mathsf{wabs\cdot(compTB[1]+compTB[2])}$ for the source~GX~9$+$1.}
\par
%\centering
\par
\begin{tabular}{cccc}
\hline\hline\noalign{\smallskip}
Parameter & HR $<$ 7.5 & 7.5 $<$ HR $<$ 8.5 & HR $>$ 8.5\\
\hline
\multicolumn{4}{c}{$\mathsf{compTB[1]}$ (thermal: $\log A=8$, $\delta=0$)}\\
$kT_{\rm s}$\tablefootmark{a} &$0.3~({<}0.6)$&$0.3~({<}0.6)$&$0.3~({<}0.6)$\\
$kT_{\rm e}$\tablefootmark{a} &$4^{\rm +3}_{-1}$&$5^{\rm +12}_{-1}$&$5~({>}3)$\\
$\alpha$&$2.1^{\rm +0.6}_{-0.6}$&$2.4^{\rm +0.7}_{-0.5}$&$2.4^{\rm +0.9}_{-0.7}$\\
$\tau$\tablefootmark{d} &2.5&2.0&1.9\\
CAF\tablefootmark{d} &1.5&1.4&1.4\\
\hline
\multicolumn{4}{c}{$\mathsf{compTB[2]}$ (blackbody: $\log A=-8$)}\\
$kT_{\rm s}$\tablefootmark{a} &$1.94^{\rm +0.03}_{-0.04}$&$1.89^{\rm +0.03}_{-0.03}$&$1.83^{\rm +0.03}_{-0.05}$\\
$R_{\rm bb}$\tablefootmark{b,d} &$3.5^{\rm +0.1}_{-0.1}$&$3.3^{\rm +0.1}_{-0.1}$&$3.4^{\rm +0.1}_{-0.1}$\\
$kT_{\rm e}$\tablefootmark{a} &--&--&--\\
$\alpha$&--&--&--\\
$\delta$&--&--&--\\
$\log A$&$[-8]$&$[-8]$&$[-8]$\\
\hline\noalign{\smallskip}
$L_{\rm tot}$\tablefootmark{c,d} &1.1&1.3&1.1\\
\hline\noalign{\smallskip}
$L_{\rm bb}$\tablefootmark{c,d} &0.2&0.2&0.2\\
&(18$\%$)&(15$\%$)&(18$\%$)\\
\hline\noalign{\smallskip}
$\chi^2/{\rm d.o.f.}$&67/106&83/103&79/105\\
\hline
\end{tabular}
\tablefoot {Errors are computed at 90$\%$ confidence level for a single parameter.
\tablefoottext{a}{In~keV;}
\tablefoottext{b}{in~km;}
\tablefoottext{c}{in units of $10^{38}$~erg~s$^{-1}$, in the 0.1$-$200~keV energy range;}
\tablefoottext{d}{computed as reported in Sect.~\ref{other}.}}
\end{table}