\begin{table}%t1
\caption{MP~Mus best-fit paramenters.}
\label{tab:tab1}
\small%\centerline
{
\begin{tabular}{lcccc}
\hline
\hline
\multicolumn{1}{l}{Par.}     & \multicolumn{4}{c}{best-fit value} \\
\hline\noalign{\smallskip}
$T^a$         & $\rm 2.7^{+0.1}_{-0.2}$ & $\rm 7.2^{+0.4}_{-0.5}$ & $\rm 36^{+18}_{-11}$     & \\
EM$^b$        & $\rm 9.6^{+5.2}_{-2.5}$ & $\rm 17.9^{+4.0}_{-3.0}$ & $\rm 2.9^{+1.5}_{-0.8}$ & \\
$N_{\rm H}^c$ & $\rm 4.6^{+1.8}_{-1.7}$ & & & \\
Ab.$^d$       & $\rm O = 0.25^{+0.08}_{-0.07}$ & $\rm Ne = 0.76^{+0.23}_{-0.15}$ & $\rm S = 0.28\pm0.20$ & $\rm Fe = 0.09^{+0.04}_{-0.02}$ \\
\hline
\end{tabular}}
\smallskip
$^a$~Temperature (MK). $^b$~Emission Measure $({\rm10^{52}~cm^{-3}})$. $^c$~Hydrogen column density $({\rm 10^{20}~cm^{-2}})$. $^d$~Abundances refer to the solar photospheric values of \citet{AsplundGrevesse2005}. All the uncertainties correspond to the 68\% confidence level.
\end{table}