\begin{table}%t1
\caption{Dereddened line intensity ratios with respect to $I$(H$\beta$)~= 100,  
reddening coefficient, observed H$\beta$~flux and physical conditions obtained from the optical spectra.}\label{table:linesoptical}
\small%\centerline
 {
\begin{tabular}{lcccccc}
\hline\hline 
& & & \multicolumn{2}{c}{SW arc} & \multicolumn{2}{c}{NE blob} \\ 
\cline{4-5} \cline{6-7}  
&&&&&& \\[-8pt]
$\lambda_{\rm 0}(\AA)$ & Identification & $f$($\lambda$) & $\lambda_{\rm obs}(\AA)$ & $I$($\lambda$)/$I$(H$\beta$) & 
$\lambda_{\rm obs}(\AA)$ & $I$($\lambda$)/$I$(H$\beta$) \\
\hline 
  4340.47 & H$\gamma$ & 0.135 & 4339.00 & 47.0 $\pm$ 2.5 & 4339.04 & 47.0 $\pm$ 3.9 \\
  4471.48 & \HeI & 0.10 & 4470.09 & 4.0 $\pm$ 0.8 & ... & ... \\
  4861.33 & H$\beta$ & 0.00 & 4859.73 & 100 $\pm$ 2 & 4859.77 & 100 $\pm$ 2 \\
  4921.93 & \HeI & --0.01 & 4920.42 & 9.2: & ... & ... \\
  4958.91 & \OIII & --0.02 & 4957.30 & 134.6 $\pm$ 3.8 & 4957.38 & 93.6 $\pm$ 2.7 \\
  5006.84 & \OIII & --0.03 & 5005.17 & 372.1 $\pm$ 8.3 & 5005.26 & 258.3 $\pm$ 5.8 \\
  5015.68 & \HeI & --0.03 & 5013.99 & 2.1 $\pm$ 0.4 & 5014.15 & 2.0 $\pm$ 0.4 \\
  5517.71 & \ClIII & --0.17 & ... & ... & 5516.19 & 0.8 $\pm$ 0.2 \\
  5537.88 & \ClIII & --0.18 & ... & ... & 5536.28 & 1.0 $\pm$ 0.2 \\
  5754.64 & \NII & --0.21 & 5752.77 & 1.3 $\pm$ 0.2 & 5752.69 & 2.5 $\pm$ 0.1 \\
  5875.67 & \HeI & --0.23 & 5873.75 & 11.4 $\pm$ 0.4 & 5873.72 & 19.8 $\pm$ 0.6 \\ 
  6046.44 & \OI & --0.26 & ... & ... & 6044.87 & 2.5: \\
  6300.30 & \fOI & --0.30 & 6298.55 & 0.9 $\pm$ 0.1 & 6298.50 & 2.4 $\pm$ 0.1 \\
  6312.10 & \SIII & --0.30 & 6310.38 & 1.8 $\pm$ 0.1 & 6310.27 & 2.4 $\pm$ 0.1 \\
  6363.78 & \fOI & --0.31 & 6362.32 & 0.2: & 6361.96 & 0.7 $\pm$ 0.1 \\
  6571.36 & \SilII & --0.31 & ... & ... & 6370.07 & 2.9 0.7 $\pm$ 0.4 \\
  6548.03 & \NII & --0.34 & 6546.10 & 18.5 $\pm$ 0.5 & 6546.02 & 26.4 $\pm$ 0.8 \\ 
  6562.82 & H$\alpha$ & --0.34 & 6560.85 & 286.0 $\pm$ 5.9 & 6560.74 & 286.0 $\pm$ 5.9 \\
  6583.41 & \NII & --0.34 & 6581.41 & 59.4 $\pm$ 1.3 & 6581.32 & 59.4 $\pm$ 1.3 \\
  6678.15 & \HeI & --0.35 & 6676.08 & 3.8 $\pm$ 0.1 & 6676.00 & 3.8 $\pm$ 0.1 \\
  6716.47 & \SII & --0.36 & 6714.33 & 2.1 $\pm$ 0.1 & 6714.05 & 2.1 $\pm$ 0.1 \\
  6730.85 & \SII & --0.36 & 6728.76 & 3.8 $\pm$ 0.1 & 6728.46 & 3.8 $\pm$ 0.1 \\
  7001.92 & \OI & --0.39 & ... & ... & 6999.58 & 0.2: \\
  7065.28 & \HeI & --0.40 & 7062.74 & 8.8 $\pm$ 0.3 & 7062.70 & 8.8 $\pm$ 0.3 \\
  7135.78 & \ArIII & --0.41 & 7133.23 & 17.4 $\pm$ 0.5 & 7133.11 & 17.4 $\pm$ 0.5 \\
  7155.14 & \FeII & --0.41 & ... & ... & 7152.25 & 0.1: \\
  7254.35$^{a}$ & \OI & --0.42 & ... & ... & 7251.66 & 2.3 $\pm$ 0.8 \\
  7281.35 & \HeI & --0.43 & 7279.25 & 1.0 $\pm$ 0.2 & 7278.96 & 0.43 $\pm$ 0.04 \\
  7318.39 & \OII & --0.43 & 7317.43 & 9.8 $\pm$ 0.4 & 7317.18 & 8.7 $\pm$ 0.3 \\
  7329.66 & \OII & --0.43 & 7327.83 & 9.1 $\pm$ 0.3 & 7327.59 & 7.5 $\pm$ 0.2 \\
  7377.83 & \NiqII & --0.44 & 7375.68 & 0.2: & 7374.98 & 0.20 $\pm$ 0.02 \\
  7442.30 & \NI & --0.44 & ... & ... & 7438.75 & 0.09 $\pm$ 0.02 \\
  7468.31 & \NI & --0.45 & ... & ... & 7465.74 & 0.15 $\pm$ 0.03 \\
  7751.10 & \ArIII & --0.48 & 7748.92 & 4.5 $\pm$ 0.1 & 7748.79 & 1.56 $\pm$ 0.06 \\
 \hline 
  $c$(H$\beta$) & & & \multicolumn{2}{c}{3.09 $\pm$ 0.02} & \multicolumn{2}{c}{4.10 $\pm$ 0.04} \\
  $F$(H$\beta$)$^{b}$ & & & \multicolumn{2}{c}{160 $\pm$ 3} & \multicolumn{2}{c}{73 $\pm$ 2} \\
  $n_{\rm e}$(\SII)$^{c}$ & & & \multicolumn{2}{c}{6700 $\pm$ 1000} & \multicolumn{2}{c}{6400 $\pm$ 1200} \\
  $n_{\rm e}$(\ClIII)$^{c}$ & & & \multicolumn{2}{c}{...} & \multicolumn{2}{c}{5400$^{+8800}_{-900}$} \\
  $T_{\rm e}$(\NII)$^{d}$ & & & \multicolumn{2}{c}{10~900 $\pm$ 600} & \multicolumn{2}{c}{13~400 $\pm$ 400} \\
\hline
\end{tabular}}
\medskip
$^{a}$ Blend of \OI\ lines at 7254.14, 7254.45 and 7254.53~\AA.
$^{b}$~Observed (uncorrected) flux in units of 10$^{-16}$~erg~cm$^{-2}$~s$^{-1}$.
$^{c}$~In cm$^{-3}$.
$^{d}$~In~K.
\end{table}