\begin{table}%t1
 \caption{Calibration constants for the  \Ha\  and \OII\  luminosity vs. SFR~relations. (Values in brackets are for ${f=1}$).}
%\centering
\par
        \begin{tabular}{r|ll|ll}\hline\hline
	 \multicolumn{1}{c}{${M_{\rm up}}$} & \multicolumn{2}{|c|}{100~\msun} & \multicolumn{2}{c}{120~\msun}\\
        \hline
	 $Z$& $C_{\rm H_\alpha}$& $C_{\rm [OII]}$ & ${C_{\rm H_\alpha}}$& ${ C_{\rm[OII]}}$\\
	\multicolumn{1}{c}{} & \multicolumn{2}{|c}{$\left[{\times 10^{41}\frac{{\rm erg ~ s^{-1}}}{M_\odot ~ {\rm yr}^{-1}}}\right]$} & \multicolumn{2}{|c}{$\left[{\times 10^{41}\frac{{\rm erg ~ s}^{-1}}{M_\odot ~ {\rm yr}^{-1}}}\right]$}\\[2mm]
  \hline
          0.0004 & 2.7       & 0.5       & 3.0       & 0.5      \\
          0.004  & 2.3       & 1.4       & 2.6       & 1.6      \\
          0.008  & 1.4 (2.1) & 1.5 (2.2) & 1.7 (2.3) & 1.8 (2.6)\\
          0.02   & 1.3 (1.8) & 1.3 (1.9) & 1.6 (2.2) & 1.6 (2.3)\\
          0.05   & 1.2 (1.7) & 1.2 (1.8) & 1.4 (1.9) & 1.4 (2.0)\\
        \hline
       \end{tabular}
       \label{calib1}
\end{table}