\begin{table}%t4
\caption{\label{tabn2hp32}Hyperfine components and $A_{ul}$ Einstein spontaneous emission coefficients of the \jtdb transition of N$_2$H$^+$.}
\small%\centerline
 {
 \begin{tabular}{cccccccc}
 \hline\hline
  $J'$ & $F_1'$ &  \multicolumn{2}{c}{$F' \rightarrow J$}  & $F_1$ & $F$ & \multicolumn{1}{c}{Frequency$^{{a}}$} & \multicolumn{1}{c}{$A_{ul}$} \cr
  &&&&&& \multicolumn{1}{c}{(MHz)}& \multicolumn{1}{c}{(s$^{-1}$)}\cr
 \hline
3&3&3&2&3&2&279~509.361&$1.110(-5)$\\
3&3&3&2&3&4&279~509.471&$1.124(-5)$\\
3&3&2&2&3&2&279~509.795&$1.244(-4)$\\
3&3&4&2&3&4&279~509.849&$1.312(-4)$\\
3&3&3&2&3&3&279~509.868&$1.176(-4)$\\
3&3&4&2&3&3&279~510.246&$8.745(-6)$\\
3&3&2&2&3&3&279~510.302&$1.555(-5)$\\
3&2&2&2&1&2&279~511.103&$2.644(-4)$\\
3&2&2&2&1&1&279~511.315&$7.933(-4)$\\
3&2&1&2&1&0&279~511.355&$5.876(-4)$\\
3&4&4&2&3&4&279~511.384&$7.870(-5)$\\
3&3&3&2&2&3&279~511.401&$1.244(-4)$\\
3&2&3&2&1&2&279~511.479&$1.058(-3)$\\
3&2&1&2&1&2&279~511.607&$2.938(-5)$\\
3&3&3&2&2&2&279~511.656&$9.950(-4)$\\
3&3&2&2&2&1&279~511.768&$9.402(-4)$\\
3&3&4&2&2&3&279~511.778&$1.119(-3)$\\
3&4&3&2&3&2&279~511.780&$1.156(-3)$\\
3&4&4&2&3&3&279~511.781&$1.181(-3)$\\
3&2&1&2&1&1&279~511.819&$4.407(-4)$\\
3&4&5&2&3&4&279~511.832&$1.259(-3)$\\
3&3&2&2&2&3&279~511.834&$4.975(-6)$\\
3&4&3&2&3&4&279~511.890&$1.606(-6)$\\
3&2&2&2&3&2&279~511.897&$6.218(-7)$\\
3&3&2&2&2&2&279~512.090&$1.741(-4)$\\
3&2&3&2&3&2&279~512.273&$1.269(-8)$\\
3&4&3&2&3&3&279~512.287&$1.012(-4)$\\
3&2&3&2&3&4&279~512.383&$5.140(-6)$\\
3&2&1&2&3&2&279~512.401&$5.597(-6)$\\
3&2&2&2&3&3&279~512.405&$4.975(-6)$\\
3&2&3&2&3&3&279~512.781&$4.442(-7)$\\
3&2&2&2&2&1&279~513.870&$2.938(-5)$\\
3&2&2&2&2&3&279~513.937&$3.047(-5)$\\
3&2&2&2&2&2&279~514.192&$1.360(-4)$\\
3&2&3&2&2&3&279~514.313&$1.741(-4)$\\
3&2&1&2&2&1&279~514.374&$1.469(-4)$\\
3&2&3&2&2&2&279~514.568&$2.177(-5)$\\
3&2&1&2&2&2&279~514.696&$4.897(-5)$\\
 \hline
\end{tabular}}
\medskip
$^{{a}}$ The frequency uncertainty is $\pm$11 kHz for all hyperfine components. 
\end{table}