\begin{table}%t2
\caption{Comparison of calculated  with observed  line ratios (\Hb~$=$ 1)
 from the whole remnant.}\label{tab2}
%\centerline
{
\begin{tabular}{ l l l l l } 
\hline \hline
 Line & Obs.$^1$ &  Obs.$^2$ & M1 & M2  \\ \hline
\ [OII] 3727+3729 & 6.74  & ($>$7)& 6.7 & 8.6 \\
\ [NeIII] 3869+3968 & -- &  0.21&0.58& 0.58\\
\ [SII] 4069+4076 &2.87 & 1.37 &1.6 & 1.8  \\
\ [OIII] 4363 &0.37& 0.14 & .27 & .33 \\
\ HeII 4686 &-- & 0.01 &0.06& 0.04  \\
\ [OIII] 4959+5007 &4.3&3.3 &3.6& 4.0 \\
\ [FeII] 5159 & -- & 0.17 & 0.3  & 0.26 \\
\ [NI] 5199+5200 &--&0.04 & 0.1  & 0.07\\
\ [FeIII] 5270 & -- & 0.04 & 0.2  & 0.29 \\
\ [NII] 5755&0.26 &0.11 & 0.4 & 0.5  \\
\ HeI 5876&0.15  & 0.12&0.18 & 0.19  \\
\ [OI] 6300+6364 &1.75& 1.52 &1.2 & 1.05   \\
\ [NII] 6583+6548 &7.16& 7.0&4.8 & 5.4   \\
\ [SII] 6717  & 0.5& 0.55 & 0.6  & 0.5  \\
\ [SII] 6730 &1.12& 1.12 &1.1  & 0.83   \\
\ [SIII] 9069+9532 &0.48& --& 1.3  & 1.4\\
\ [CI] 9823+9849 & 0.20 &--&0.3&0.46 \\
\ $w$(m1)       & -- & -- & 0 & 3  \\
\ $w$(m3)       & -- & -- &1.3&5  \\
\ $w$(m4)       & -- & -- &1 & 0 \\
\ $w$(m5)       & -- & -- & 0 &3  \\
\ $w$(m6)      & -- & -- &1 &3  \\
\ $w$(m7)       & -- & -- &0  & 1 \\
\ $w$(m8)       & -- & -- &1.3& 0 \\
\ $w$(m9)       & -- & -- & 0 & 1 \\
\hline
\end{tabular}}
\medskip
$^1$ Dennefeld (\cite{Den82});  merged 1979 spectrum corrected for reddening  by $c=1.69$. \\
$^2$ Leibowitz \& Danziger (\cite{Lei83}):  dereddened by $c=1.46$.
\end{table}