\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}