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Table 1:

Observed hyperfine frequencies and residuals of the $J_K = 1_0 \leftarrow 0_0$ transition of NH3.
\begin{displaymath}\scriptsize
{ \begin{tabular}{D{-}{-}{3}D{,}{\leftarrow}{1}D...
...4}{l}{$\sigma^{\rm d}$} & 1.02 & 0.59\\
\hline
\end{tabular}}
\end{displaymath}

$^{\rm a}$ Estimated uncertainties are reported in parentheses in units of the last quoted digit; $^{\rm b}$ in the first column the order numbers of the dips corresponding to the crossover resonance are reported; $^{\rm c}$ rms error of residuals: $\sqrt{\frac{\sum {\rm residual}^2}{{\rm N\;observations}}}$; $^{\rm d}$ fit standard deviation: $\sqrt{\frac{\sum {\rm (residual/uncert.)}^2}{{\rm degrees\;of\;freedom}}}\cdot$


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