\begin{table}%t2
\caption{Best-fit parameter values and $1\sigma$ errors for the BBN
constraints on $\frac{\Delta\alpha}{\alpha_0}$ and $\eta_{\rm B}$ (in units of $10^{-10}$).}
\label{resulbbn1}
\par
%\centering
\small
\begin{tabular}{cccc}
\hline \hline
%&&& \\[-8pt]
Data & $\eta_{\rm B} \pm \sigma \left[ 10^{-10}\right]$&$\frac{\Delta
\alpha}{\alpha_0}\pm \sigma$&$\frac{\chi^2_{\rm min}}{N-2}$ \\ 
%&&& \\[-8pt]
\hline 
%&&& \\[-8pt]
$\De + \He + \Li$& $\rm 4.188_{-0.095}^{+0.098}$& $\rm -0.008_{-0.007}^{+0.004}$ & 10.33
\\   
$\He + \Li$ & $\rm 3.289_{-0.148}^{+0.135}$ & $-0.051 \pm 0.009$&  1.00
\\   
$\De + \Li$ & $\rm 7.362_{-0.491}^{+0.572}$ & $ 0.165 \pm 0.012$&  1.00
\\  
$\De + \He$ & $\rm 6.195_{-0.418}^{+0.443}$& $-0.019 \pm 0.008$&  1.00
\\
\hline
\end{tabular}
\end{table}