\begin{table}%t2
\caption{\label{tab:lines}Strongest RGS lines of MP~Mus and TW~Hya.}
\small%\centerline
$$
\begin{tabular}{rlcrr@{$\;\pm\;$}lcrr@{$\;\pm\;$}lc}
\hline\hline
 & & & \multicolumn{4}{c}{MP~Mus} & \multicolumn{4}{c}{TW~Hya} \\
$\lambda_{\rm pred}^{a}$ & Ion & $\log T_{\rm max}^{b}$ & $\lambda_{\rm obs}^{a}$ & \multicolumn{2}{c}{Flux$^{c}$} & {\it EMD}$^{d}$ & $\lambda_{\rm obs}^{a}$ & \multicolumn{2}{c}{Flux$^{c}$} & 
{\it EMD}$^{d}$ \\[2pt]
\hline
 8.42 &                                            \ion{Mg}{xii} \ion{Mg}{xii} &  7.00 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &        8.39 &         4.1 &         4.1 &  $\ast$  \\
10.24 &                                                \ion{Ne}{x} \ion{Ne}{x} &  6.80 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       10.28 &         7.6 &         5.2 &  $\ast$  \\
11.00 &                                                           \ion{Ne}{ix} &  6.60 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       11.01 &        10.8 &         7.2 &  $\ast$  \\
11.54 &                                                           \ion{Ne}{ix} &  6.60 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       11.55 &        23.6 &        16.7 &  $\ast$  \\
12.13 &                                 \ion{Ne}{x} \ion{Ne}{x} \ion{Fe}{xvii} &  6.80 &       12.14 &        22.2 &         3.4 &  $\ast$  &       12.15 &        58.6 &         9.4 &  $\ast$  \\
12.28 &                                           \ion{Fe}{xxi} \ion{Fe}{xvii} &  7.00 &       12.30 &         5.5 &         2.6 &  $\ast$  & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          \\
12.85 &                    \ion{Fe}{xx} \ion{Fe}{xx} \ion{Fe}{xx} \ion{Fe}{xx} &  7.00 &       12.86 &         3.4 &         2.3 &  $\ast$  & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          \\
13.45 &                                             \ion{Ne}{ix} \ion{Fe}{xix} &  6.60 &       13.46 &        21.1 &         3.7 &  $\ast$  &       13.46 &       244.7 &        18.5 &  $\ast$  \\
13.55 &                                             \ion{Ne}{ix} \ion{Fe}{xix} &  6.60 &       13.55 &         8.6 &         3.1 &          &       13.56 &       162.4 &        16.4 &          \\
13.70 &                                                           \ion{Ne}{ix} &  6.60 &       13.73 &         8.8 &         2.8 &          &       13.71 &        91.7 &        29.8 &          \\
14.21 &                                        \ion{Fe}{xviii} \ion{Fe}{xviii} &  6.90 &       14.19 &         3.3 &         1.7 &  $\ast$  & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          \\
14.82 &                                            \ion{O}{viii} \ion{O}{viii} &  6.50 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       14.84 &        10.5 &         4.8 &  $\ast$  \\
15.01 &                                                         \ion{Fe}{xvii} &  6.70 &       15.02 &        11.8 &         2.9 &  $\ast$  &       15.05 &        26.5 &         5.7 &  $\ast$  \\
15.18 &               \ion{O}{viii} \ion{O}{viii} \ion{Fe}{xix} \ion{Fe}{xvii} &  6.50 &       15.21 &         7.6 &         2.5 &  $\ast$  &       15.21 &        23.6 &         7.7 &  $\ast$  \\
16.01 &            \ion{O}{viii} \ion{O}{viii} \ion{Fe}{xviii} \ion{Fe}{xviii} &  6.50 &       16.02 &        22.6 &         6.3 &  $\ast$  &       16.03 &        43.2 &        15.5 &  $\ast$  \\
16.78 &                                                         \ion{Fe}{xvii} &  6.70 &       16.78 &         8.8 &         1.8 &  $\ast$  &       16.79 &        13.3 &         6.8 &  $\ast$  \\
17.05 &                                          \ion{Fe}{xvii} \ion{Fe}{xvii} &  6.70 &       17.08 &        17.2 &         3.0 &  $\ast$  &       17.06 &        24.3 &         7.6 &  $\ast$  \\
17.77 &                                                           \ion{O}{vii} &  6.40 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       17.80 &         5.7 &         6.6 &  $\ast$  \\
18.63 &                                                           \ion{O}{vii} &  6.30 &       18.65 &         8.7 &         2.6 &  $\ast$  &       18.65 &        21.6 &         5.8 &  $\ast$  \\
18.97 &                                            \ion{O}{viii} \ion{O}{viii} &  6.50 &       18.98 &        65.6 &         4.7 &  $\ast$  &       18.98 &       292.7 &        13.3 &  $\ast$  \\
19.83 &                                              \ion{N}{vii} \ion{N}{vii} &  6.40 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       19.85 &         4.3 &         4.4 &  $\ast$  \\
20.91 &                                              \ion{N}{vii} \ion{N}{vii} &  6.30 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       20.95 &        14.3 &         9.8 &  $\ast$  \\
21.60 &                                                           \ion{O}{vii} &  6.30 &       21.60 &        30.2 &         4.0 &  $\ast$  &       21.62 &       191.7 &        17.5 &  $\ast$  \\
21.80 &                                                           \ion{O}{vii} &  6.30 &       21.81 &        27.9 &         7.9 &          &       21.83 &       104.6 &        14.3 &          \\
22.10 &                                                           \ion{O}{vii} &  6.30 &       22.10 &         8.0 &         2.8 &          &       22.12 &        13.8 &         8.7 &          \\
24.78 &                                              \ion{N}{vii} \ion{N}{vii} &  6.30 &       24.80 &        10.5 &         2.8 &  $\ast$  &       24.79 &       118.2 &        13.4 &  $\ast$  \\
28.47 &                                                \ion{C}{vi} \ion{C}{vi} &  6.20 &       28.49 &         3.8 &         1.3 &  $\ast$  & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          \\
28.79 &                                                            \ion{N}{vi} &  6.20 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       28.82 &        25.2 &         5.2 &  $\ast$  \\
29.08 &                                                            \ion{N}{vi} &  6.10 & $\cdots$ & \multicolumn{2}{c}{$\cdots$} &          &       29.10 &        11.5 &         5.0 &          \\
33.73 &                                                \ion{C}{vi} \ion{C}{vi} &  6.10 &       33.74 &        16.4 &         5.2 &  $\ast$  &       33.75 &        86.5 &        13.8 &  $\ast$  \\
\hline
\end{tabular}
$$
\medskip
$^a$~Predicted (APED database) and observed wavelengths (\AA);
$^b$~temperature (K) of maximum emissivity;
$^c$~observed line fluxes (${\rm 10^{-6}~ph~s^{-1}~cm^{-2}}$) with uncertainties at the 68\%~confidence level;
$^d$~lines selected for the {\it EMD} reconstruction.
\end{table}