\begin{table}%t7 
 \caption{\label{tab7}The extinction $A_V$ from Balmer decrement, {\it SFR}s,
 important emission line ratios, oxygen abundance 
 in ISM and continuum colors 
 of the low-$z$ galaxies. "nc'' means no extinction correction for the emission line fluxes. 
  The uncertainties of the line ratios and metallicity are from the uncertainties of 
extinction and emission line flux measurements.
}  
%\centering
\par
\begin{tabular}{lcccccccc} \hline\hline
 Slit  & $A_V$ & {\it SFR}  & log($\frac{\mbox{\ion{\scriptsize[S}{ii]}}}{{\rm H}\alpha}$) & log($\frac{\mbox{\scriptsize\ion{[N}{ii]}}}{{\rm H}\alpha}$)  & log($\frac{\mbox{\scriptsize\ion{[O}{iii]}}}{{\rm H}\beta}$) &log$R_3$ & 12+log($\frac{{\rm O}}{{\rm H}}$) & $\frac{C6563}{C4861}$  \\  
     &             & $M_{\odot}$~yr$^{-1}$    &      &  &  & & &   \\ 
 (1) &  (2) & (3) & (4) & (5) & (6) & (7) & (8) & (9)    \\ \hline
\par
CFRS &             &      &      &  &  & &  &  \\
03$^{nc}$     &    --       &     --                  & $-$0.26~$\pm$~0.20     &  $-$0.80~$\pm$~0.12  &   --     &  --         & --   &-- \\
09         &  1.30~$\pm$~0.38  &  $\rm 0.88_{-0.53}^{+0.24}$  & $-$0.54~$\pm$~0.04     &  $-$0.47~$\pm$~0.06  & $-$0.40~$\pm$~0.08   &  $-$0.55~$\pm$~0.11  &  9.14~$\pm$~0.08  & 0.5546    \\
13         &  0.14~$\pm$~0.15  &  $\rm 0.39_{-0.04}^{+0.04}$  & $-$0.39~$\pm$~0.09     &  $-$0.37~$\pm$~0.05  & $-$0.36~$\pm$~0.04   &  $-$0.49~$\pm$~0.06  &  9.10~$\pm$~0.04  & 0.2778    \\
19         &  1.18~$\pm$~0.52  &  $\rm 0.50_{-0.28}^{+0.18}$  &       --            &  $-$0.40~$\pm$~0.13  & $~~$0.25~$\pm$~0.06  &  $~~$0.34~$\pm$~0.08 &  8.53~$\pm$~0.06  & 0.4482    \\ 
21         &  2.45~$\pm$~0.45  &  $\rm 2.18_{-1.80}^{+0.70}$  & $-$0.37~$\pm$~0.10     &  $-$0.69~$\pm$~0.15  & $~~$0.11~$\pm$~0.09  & $~~$0.15~$\pm$~0.12  &  8.66~$\pm$~0.08  & 0.2514    \\
23$^{nc}$  &     --         &     --                  & $-$0.37~$\pm$~0.06     & $~~$0.16~$\pm$~0.01  &      --           &       --          &       --       &  --      \\
30         &  0.62~$\pm$~0.19  &  $\rm 1.69_{-0.60}^{+0.23}$  & $-$0.42~$\pm$~0.10     &  $-$0.69~$\pm$~0.05  & $~$0.05~$\pm$~0.03   &  $~~$0.06~$\pm$~0.04 &  8.72~$\pm$~0.03  & 0.1889    \\ \hline
UDSR       &                 &                          &                      &                    &                    &                    &                 &           \\
01         &  0.56~$\pm$~0.17  &  $\rm 0.11_{-0.04}^{+0.01}$  & $-$0.52~$\pm$~0.07     &  $-$0.89~$\pm$~0.04  & $~~$0.44~$\pm$~0.02  &  $~~$0.60~$\pm$~0.03 &  8.35~$\pm$~0.02  & 0.3810    \\
06         &  1.02~$\pm$~0.38  &  $\rm 0.45_{-0.23}^{+0.12}$  & $-$0.25~$\pm$~0.18     &  $-$0.21~$\pm$~0.04  & $-$0.05~$\pm$~0.07   &  $-$0.07~$\pm$~0.09  &  8.81~$\pm$~0.06  & 0.3896    \\
11         &  0.25~$\pm$~0.16  &  $\rm 0.16_{-0.03}^{+0.02}$  & $-$0.02~$\pm$~0.06     &  $-$0.23~$\pm$~0.02  & $-$0.14~$\pm$~0.04   &  $-$0.19~$\pm$~0.05  &  8.89~$\pm$~0.04  & 0.3608    \\
12$^{nc}$  &     --         &       --                & $-$0.20~$\pm$~0.11     &  $-$0.26~$\pm$~0.04  & -- &-- &--  & -- \\
13$^{nc}$  &     --         &       --                & $-$0.29~$\pm$~0.19     &  $-$0.22~$\pm$~0.07  & -- &-- &-- & --  \\
16$^{nc}$  &     --         &       --                & $-$0.30~$\pm$~0.05     &  $-$0.65~$\pm$~0.04  & -- &-- &-- & --  \\  \hline
UDSF       &                 &                          &                      &                    &     &    &    &      \\
11         &  $\rm 0.01_{-0.01}^{+0.09}$ &  $\rm 0.09_{-0.00}^{+0.01}$  & $-$0.20~$\pm$~0.04  &  $-$0.34~$\pm$~0.01  & $-$0.23~$\pm$~0.03 & $-$0.31~$\pm$~0.04  &  8.98~$\pm$~0.03  &  0.3308 \\
   15      &  1.06~$\pm$~0.29  &  $\rm 0.51_{-0.27}^{+0.10}$  & $-$0.50~$\pm$~0.19     &  $-$1.03~$\pm$~0.14  &  $~~$0.30~$\pm$~0.04  & $~~$0.41~$\pm$~0.06   &  8.48~$\pm$~0.04  &  0.3887\\ 
22$^{nc}$  &     --         &--                       & $-$0.35~$\pm$~0.07     &  $-$0.49~$\pm$~0.05      & -- &-- &--  &--   \\        \hline
\end{tabular} 
\end{table}