\begin{table}%t2
\caption{\ion{Ni}{i} isotopic splitting.}
\label{isoni}
%\centering
\par
\begin{tabular}{rrrrr}
\hline\hline\noalign{\smallskip}
\ion{Ni}{i} isotope & \%      & Wavelength & \loggf & \% used\\
\noalign{\smallskip}\hline\noalign{\smallskip}
$^{58}$\ion{Ni}{i} & 68.27 & 630.0335 & --2.11 & 72.34 \\
$^{60}$\ion{Ni}{i} & 26.10 & 630.0355 & --2.11 & 27.66 \\
\noalign{\smallskip}\hline\noalign{\smallskip}
$^{58}$\ion{Ni}{i} & 68.27 & 630.0335 & --2.11 & 69.05 \\
$^{60}$\ion{Ni}{i} & 26.10 & 630.0355 & --2.11 & 26.40 \\
$^{62}$\ion{Ni}{i} &  3.59 & 630.0375 & --2.11 &  3.63 \\
$^{64}$\ion{Ni}{i} &  0.91 & 630.0395 & --2.11 &  0.92 \\
\hline\noalign{\smallskip}
\end{tabular}
\end{table}