\begin{table}%t5
\caption{Observed and predicted bow shock luminosities and line ratios.}\label{luminosities}
\small%%\centerline

{
\begin{tabular}{lccc}
\hline\hline
\noalign{\smallskip}
Line           & Observed$^{\ast}$    & Dereddened$^{\dagger}$  & J-type  \\
               &                      &                      & Model   \\
\hline
 NK~1         &                      &                      & \\
\hline
\noalign{\smallskip}
H${_2}$~(1,0)~S(1) & 8.0 $\times$ 10$^{-4}$ & 2.0 $\times$ 10$^{-3}$ & 2.0 $\times$ 10$^{-3}$   \\
H${_2}$~(2,1)~S(1) & 8.1 $\times$ 10$^{-5}$ & 2.0 $\times$ 10$^{-4}$ & 2.3 $\times$ 10$^{-4}$    \\
H${_2}$~(3,2)~S(3) &     --                  & -- & 6.0 $\times$ 10$^{-5}$    \\
${\rm [Fe~II]}$ ~ ${^4}$D$_{7/2}$ -- ${^4}$F$_{9/2}$ & 1.2 $\times$ 10$^{-4}$ & 5.3 $\times$ 10$^{-4}$ & 
3.1 $\times$ 10$^{-4}$  \\
${(2,1)/(1,0)}$~~ratio & ${0.10 ~ (0.02)}$     & ${0.10 ~ (0.02)}$     & 0.11 \\
${\rm [Fe~II]/(1,0)}$~~ ratio & ${0.15 ~ (0.02)}$     & ${0.27 ~ (0.04)}$     & 0.15 \\
\hline
SK~1         &                      &                      & \\
\hline 
\noalign{\smallskip}
H${_2}$~(1,0)~S(1) & 9.8 $\times$ 10$^{-4}$ & 3.4 $\times$ 10$^{-3}$ & 2.0 $\times$ 10$^{-3}$    \\
H${_2}$~(2,1)~S(1) & 1.5 $\times$ 10$^{-4}$ & 5.2 $\times$ 10$^{-4}$ & 2.3 $\times$ 10$^{-4}$     \\
H${_2}$~(3,2)~S(3) & 3.4 $\times$ 10$^{-5}$ & 8.4 $\times$ 10$^{-5}$ &  6.0 $\times$ 10$^{-5}$   \\
${\rm [Fe~II]}$ ~ ${^4}$D$_{7/2}$ -- ${^4}$F$_{9/2}$ & 6.6 $\times$ 10$^{-5}$ & 4.5 $\times$ 10$^{-4}$ & 
3.1 $\times$ 10$^{-4}$  \\
${(2,1)/(1,0)}$~~ratio & ${0.16 ~ (0.02)}$     & ${0.16 ~ (0.02)}$     & 0.11 \\
${\rm [Fe~II]/(1,0)}$~~ ratio & ${0.07 ~ (0.02)}$     & ${0.13 ~ (0.04)}$     & 0.15 \\
\hline 
\end{tabular}}
\medskip
$\ast$ The 3$\sigma$ detection limits are 5.1~$\times$ 10$^{-5}~L_{\odot}$ and 6.4~$\times$ 10$^{-5}$ for NK~1 and SK~1 respectively. Luminosities are expressed in units of $L_{\odot}$ and a~distance of 460~pc is adopted. \\
$\dagger$ Luminosities have been dereddened using $K$-band extinctions of~1.0 and 1.4~mag for NK~1 and SK~1. $H$-band extinctions of~1.6 and 2.1~mag were used to deredden the [Fe {\small II}]~luminosities (using $A_{\rm H}$~= 1.56~$\times$ $A_K$ from \citet{1985ApJ...288..618R}).
\end{table}