\begin{table}%t2%t3
\caption{\label{Table:fluxes_a}Reddening corrected line ratios, normalized to \Hb$^{(*)}$, for the 
knots identified in Mrk~1418.}
\par
\small%\centerline
 { {
\begin{tabular}{llcccccccccccccc}       
\hline\hline                  
$\lambda$  & Ion  &         
                     \multicolumn{2}{c}{knot~1}         & 
		     \multicolumn{2}{c}{knot~2}         & 
		     \multicolumn{2}{c}{knot~3}         & 
		     \multicolumn{2}{c}{knot~4}         & 
		     \multicolumn{2}{c}{knot~5}         &  
		     \multicolumn{2}{c}{Nucleus}        & 
		     \multicolumn{2}{c}{Integrated}     \\    
           &      & 
	             $F_{\lambda}$  & $-W_{\lambda}$   & 
		     $F_{\lambda}$  & $-W_{\lambda}$   & 
		     $F_{\lambda}$  & $-W_{\lambda}$   & 
		     $F_{\lambda}$  & $-W_{\lambda}$   & 
                     $F_{\lambda}$  & $-W_{\lambda}$   & 
		     $F_{\lambda}$  & $-W_{\lambda}$   & 
		     $F_{\lambda}$  & $-W_{\lambda}$   \\  
		     \hline   
3727 &  [\ion{O}{ii}]    &  
                    $ 3.19\pm0.27$  &  $ 82.14\pm0.93$  &  
                    $ 3.43\pm0.30$  &  $ 62.70\pm1.03$  &    
                    $ 3.10\pm0.31$  &  $ 52.25\pm1.81$  &   
                    $ 6.00\pm0.56$  &  $117.2 \pm3.53$  &  
                    $ 5.24\pm0.57$  &  $ 65.37\pm3.65$  &  
                    $10.45\pm1.38$  &  $ 23.53\pm0.78$  & 
                    $ 5.44\pm0.43$  &  $ 43.28\pm0.25$  \\
3869 &  [\ion{Ne}{iii}]  &        
                    $ 0.51\pm0.04$  &  $ 11.72\pm0.44$  &  
                    $ 0.39\pm0.03$  &  $  7.94\pm0.44$  &    
                    $ 0.56\pm0.07$  &  $  7.34\pm0.77$  &   
                    $ 0.43\pm0.12$  &  $  6.27\pm1.40$  &  
                    $ 0.83\pm0.20$  &  $  7.68\pm1.62$  & 
                     ---            &  ---              & 
                    $ 1.00\pm0.07$  &  $  7.70\pm0.12$  \\
3968 &  [\ion{Ne}{iii}]  &  
                    $ 0.19\pm0.02$  &  $  4.66\pm0.30$  &  
                    $ 0.18\pm0.02$  &  $  3.74\pm0.36$  &   
                      ---           &  ---              &  
                      ---           &  ---              &  
                      ---           &  ---              &
                     ---            &                   & 
                     ---            &  ---              \\
4101 & H$\delta$ &  
                    $ 0.28\pm0.02$  &  $  6.82\pm0.22$  &    
                    $ 0.30\pm0.02$  &  $  7.31\pm0.32$  &    
                    $ 0.37\pm0.07$  &  $  5.31\pm0.46$  &    
                    $ 0.26\pm0.08$  &  $  3.93\pm0.71$  & 
                      ---           &  ---              &
                      ---           &  ---              & 
                      ---           &  ---              \\
4340 & H$\gamma$ &  
                    $ 0.46\pm0.02$  &  $ 12.95\pm0.23$  &  
                    $ 0.46\pm0.03$  &  $ 13.37\pm0.33$  &    
                    $ 0.46\pm0.04$  &  $  7.21\pm0.36$  &    
                    $ 0.47\pm0.05$  &  $  8.28\pm0.60$  &  
                    $ 0.47\pm0.07$  &  $  6.91\pm0.63$  & 
		    --- 	    &  ---              & 
		    $ 0.47\pm0.02$  &  $  4.29\pm0.05$	\\
4363 & [\ion{O}{iii}]    &  
                    $ 0.05\pm0.01$  &  $  2.00\pm0.23$  &  
                    $ 0.05\pm0.01$  &  $  2.29\pm0.37$  &    
                     ---            &  ---              &    
                     ---            &  ---              &  
                     ---            &  ---              &
                    ---             &  ---              & 
                    $ 0.10\pm0.04$  &  $ 1.02 \pm0.06$  \\
4861 & H$\beta$          &  
                    $ 1.00       $  &  $ 31.27\pm0.25$  &  
                    $ 1.00       $  &  $ 32.96\pm0.34$  &    
                    $ 1.00       $  &  $ 17.42\pm0.39$  &    
                    $ 1.00       $  &  $ 18.30\pm0.90$  &  
                    $ 1.00       $  &  $ 12.73\pm0.68$  &
                    $ 1.00       $  &  $  3.03\pm0.24$  & 
                    $ 1.00       $  &  $ 10.14\pm0.06$  \\
4959 & [\ion{O}{iii}]   &  
                    $ 1.24\pm0.04$  &  $ 38.81\pm0.29$  &  
                    $ 1.16\pm0.03$  &  $ 41.07\pm0.44$  &    
                    $ 1.12\pm0.05$  &  $ 19.89\pm0.41$  &    
                    $ 0.61\pm0.04$  &  $ 11.54\pm0.48$  &  
                    $ 1.14\pm0.08$  &  $ 15.78\pm0.66$  &
                    $ 0.83\pm0.09$  &  $  2.61\pm0.18$  & 
                    $ 1.06\pm0.03$  &  $ 11.01\pm0.06$  \\
5007 &  [\ion{O}{iii}]   &  
                    $ 3.62\pm0.10$  &  $113.9 \pm0.46$  &  
                    $ 3.45\pm0.10$  &  $122.70\pm0.51$  &    
                    $ 3.19\pm0.12$  &  $ 55.06\pm0.49$  &     
                    $ 1.78\pm0.09$  &  $ 34.54\pm0.54$  &  
                    $ 3.29\pm0.18$  &  $ 46.81\pm0.90$  &
                    $ 2.34\pm0.20$  &  $  7.61\pm0.20$  & 
                    $ 3.16\pm0.09$  &  $ 33.48\pm0.09$  \\
5876 &  \ion{He}{i}      &  
                     ---            &   ---             &  
                    $ 0.07\pm0.01$  &  $  3.11\pm0.21$  &    
                    $ 0.11\pm0.01$  &  $  2.48\pm0.26$  &    
                    $ 0.07\pm0.01$  &  $  1.88\pm0.35$  &  
                    $ 0.08\pm0.02$  &  $  1.60\pm0.49$  &  
                    ---             &   ---             &  
                    $ 0.05\pm0.01$  &  $  0.75\pm0.03$  \\
6548 &  [\ion{N}{ii}]    &  
                    $ 0.08\pm0.01$  &  $  3.69\pm0.19$  &  
                    $ 0.15\pm0.01$  &  $  8.15\pm0.44$  &    
                    $ 0.10\pm0.02$  &  $  2.65\pm0.34$  &   
                    $ 0.13\pm0.02$  &  $  3.77\pm0.47$  &  
                    $ 0.10\pm0.03$  &  $  2.37\pm0.62$  &  
                    $ 0.12\pm0.03$  &  $  0.80\pm0.21$  & 
                    $ 0.11\pm0.01$  &  $  1.95\pm0.05$  \\
6563 & H$\alpha$ &  
                    $ 2.87\pm0.10$  &  $137.6 \pm0.39$  &  
                    $ 2.88\pm0.14$  &  $154.1 \pm1.35$  &    
                    $ 2.90\pm0.20$  &  $ 73.72\pm0.79$  &    
                    $ 2.87\pm0.15$  &  $ 84.12\pm1.41$  &  
                    $ 2.87\pm0.16$  &  $ 69.03\pm1.48$  &
                    $ 2.86\pm0.34$  &  $ 19.63\pm0.27$  & 
                    $ 2.86\pm0.07$  &  $ 49.87\pm0.10$  \\ 
6584 &  [\ion{N}{ii}]    &  
                    $ 0.26\pm0.01$  &  $ 12.50\pm0.23$  &  
                    $ 0.29\pm0.02$  &  $ 15.22\pm0.43$  &    
                    $ 0.22\pm0.02$  &  $  5.68\pm0.40$  &   
                    $ 0.31\pm0.03$  &  $  9.14\pm0.61$  &  
                    $ 0.19\pm0.03$  &  $  4.56\pm0.61$  &
                    $ 0.33\pm0.05$  &  $  2.25\pm0.20$  & 
                    $ 0.27\pm0.01$  &  $  4.63\pm0.06$  \\
6717 & [\ion{S}{ii}]     &  
                    $ 0.26\pm0.01$  &  $ 12.50\pm0.28$  &  
                    $ 0.31\pm0.02$  &  $ 17.05\pm0.44$  &    
                    $ 0.31\pm0.03$  &  $  8.21\pm0.44$  &   
                    $ 0.42\pm0.03$  &  $ 12.93\pm0.60$  &  
                    $ 0.29\pm0.03$  &  $  7.30\pm0.66$  &
                    $ 0.58\pm0.08$  &  $  4.21\pm0.23$  &
                    $ 0.40\pm0.01$  &  $  8.49\pm0.05$  \\ 
6731 & [\ion{S}{ii}]          &  
                    $ 0.21\pm0.01$  &  $ 10.22\pm0.25$  &  
                    $ 0.23\pm0.02$  &  $ 12.69\pm0.43$  &    
                    $ 0.20\pm0.02$  &  $  5.43\pm0.41$  &   
                    $ 0.32\pm0.02$  &  $  9.87\pm0.57$  &  
                    $ 0.20\pm0.03$  &  $  5.17\pm0.68$  &
                    $ 0.42\pm0.06$  &  $  3.02\pm0.21$  &
                    $ 0.30\pm0.01$  &  $  5.52\pm0.07$  \\ 
      &          &  
                    \multicolumn{2}{c}{$F(\Hb)= 324.6\pm22.7$} &
                    \multicolumn{2}{c}{$F(\Hb)= 166.3\pm15.2$} &
                    \multicolumn{2}{c}{$F(\Hb)=  67.4\pm11.3$} &
                    \multicolumn{2}{c}{$F(\Hb)=  84.6\pm 6.0$} &
                    \multicolumn{2}{c}{$F(\Hb)=  42.4\pm 3.9$} &
                    \multicolumn{2}{c}{$F(\Hb)= 106.3\pm30.4$} &
                    \multicolumn{2}{c}{$F(\Hb)=1871.9\pm62.6$} \\
      &          &              
		    \multicolumn{2}{c}{$C(\Hb)=0.111\pm0.032$} &
                    \multicolumn{2}{c}{$C(\Hb)=0.073\pm0.035$} &
                    \multicolumn{2}{c}{$C(\Hb)=0.123\pm0.064$} &
                    \multicolumn{2}{c}{$C(\Hb)=0.267\pm0.025$} &
                    \multicolumn{2}{c}{$C(\Hb)=0.361\pm0.030$} &
                    \multicolumn{2}{c}{$C(\Hb)=0.625\pm0.105$} &
                    \multicolumn{2}{c}{$C(\Hb)=0.316\pm0.011$} \\
      &          &	    
                    \multicolumn{2}{c}{$W_{\rm abs}=3.2\AA$} &
                    \multicolumn{2}{c}{$W_{\rm abs}=2.9\AA$} &
                    \multicolumn{2}{c}{$W_{\rm abs}=2.9\AA$} &
                    \multicolumn{2}{c}{$W_{\rm abs}=1.7\AA$} &
                    \multicolumn{2}{c}{$W_{\rm abs}=1.4\AA$} &
                    \multicolumn{2}{c}{$W_{\rm abs}=3.0\AA$} &
                    \multicolumn{2}{c}{$W_{\rm abs}=2.1\AA$} \\[2pt]
\hline
\end{tabular}}}
\medskip
(*) Notes. -- Reddening-corrected line fluxes, normalized to $F(\Hb)=1$. Equivalent widths of Balmer lines are corrected for underlying stellar absorption. The reddening coefficients, $C(\Hb)$, the value of the absorption correction, $EW_{\rm abs}$, and the reddening-corrected \Hb~flux, $F(\Hb) 
(\times 10^{-16}$~erg~cm$^{-2}$~s$^{-1}$) are listed for each region.  In the nuclear region, only \Hb\ and \Hb\ could be measured, so~we were unable to compute $EW_{\rm abs}$ and~$C(\Hb)$ simultaneously;  to determine the latter we assumed $EW_{\rm abs}=3.0$. The quoted uncertainties include measurements, flux-calibration and reddening coefficient errors. 
\end{table}