\begin{table}%T2
\caption{Dependences of $\R I2$: least-square fit parameters (without
constant term).}
\label{tab:lsf0}
%\centering
\par
\small
\begin{tabular}{@{}@{\extracolsep{\fill}}rlrr
@{\extracolsep{6pt}}r@{\extracolsep{\fill}}r@{\extracolsep{6pt}}r
@{\extracolsep{\fill}}r@{\extracolsep{6pt}}r@{\extracolsep{\fill}}c
@{\extracolsep{0pt}}@{}}
\hline\hline\\[-7pt]
\multicolumn{1}{c}{HD}&\multicolumn{1}{c}{Ion}&\multicolumn{1}{c}{$n$}
&\multicolumn{1}{c}{$a_1$}&\multicolumn{1}{c}{$\sigma(a_1)$}
&\multicolumn{1}{c}{$a_2$}&\multicolumn{1}{c}{$\sigma(a_2)$}
&\multicolumn{1}{c}{$a_3$}&\multicolumn{1}{c}{$\sigma(a_3)$}
&\multicolumn{1}{c}{$10^3~$rms}\\[1pt]
&&&\multicolumn{2}{c}{{$[({\rm km~s}^{-1})^2]$}}
&\multicolumn{2}{c}{$[{\rm G}^2]$}
&\multicolumn{2}{c}{{$[10^6~({\rm km}~{\rm s}^{-1}~
\mbox{\rm\AA}^{-1})^4 ]$}}
&\multicolumn{1}{c}{$[\mbox{\rm\AA}^2 ]$}\\[2mm]
\hline
 47103&\ion{Fe}{i} & 30& 25.09& 15.15&$3.740\times10^8$&$0.276\times10^8$& 3.790& 0.563& 3.551\\ 
      &\ion{Fe}{ii}& 22& 21.14& 23.03&$4.026\times10^8$&$0.270\times10^8$& 2.789& 0.454& 3.416\\
      &\ion{Cr}{ii}& 15&$-$66.32& 78.17&$3.902\times10^8$&$0.429\times10^8$& 4.122& 1.480& 6.107\\[2pt]
 81009&\ion{Fe}{i} & 56& 46.92& 17.13&$9.654\times10^7$&$0.861\times10^7$& 5.988& 1.008& 2.834\\
      &\ion{Cr}{ii}& 21&137.97& 20.10&$6.025\times10^7$&$1.339\times10^7$& 3.405& 1.249& 1.957\\[2pt]
 91375&\ion{Fe}{i} &122& 91.33&  3.23&$1.881\times10^6$&$1.172\times10^6$& 5.980& 0.382& 0.684\\
      &\ion{Fe}{ii}& 58&140.32&  8.50&\llap{$-$}$7.433\times10^6$&$2.816\times10^6$& 3.133& 0.417& 1.144\\[2pt]
 94660&\ion{Fe}{ii}& 92& 77.24&  9.23&$3.901\times10^7$&$0.308\times10^7$& 2.870& 0.358& 1.736\\
      &\ion{Cr}{ii}& 91& 52.89&  6.39&$4.284\times10^7$&$0.298\times10^7$& 2.792& 0.279& 1.396\\[2pt]
 96446&\ion{N}{ii} & 24&136.57& 18.17&$4.247\times10^7$&$0.982\times10^7$&    --&    --& 2.106\\
      &\ion{O}{ii} & 47&175.16& 13.03&$3.680\times10^7$&$0.772\times10^7$&    --&    --& 1.805\\[2pt]
116114&\ion{Fe}{i} & 89& 44.65&  7.17&$5.123\times10^7$&$0.273\times10^7$& 2.797& 0.219& 1.401\\
      &\ion{Cr}{ii}& 28& 70.12& 10.84&$5.106\times10^7$&$0.440\times10^7$& 1.645& 0.583& 1.225\\[2pt]
116458&\ion{Fe}{i} & 33& 37.02& 11.31&$3.798\times10^7$&$0.548\times10^7$& 2.082& 0.981& 0.949\\
      &\ion{Fe}{ii}& 83& 64.99&  6.36&$2.224\times10^7$&$0.204\times10^7$& 2.182& 0.384& 0.995\\
      &\ion{Cr}{ii}& 88& 58.55&  6.22&$3.131\times10^7$&$0.284\times10^7$& 4.347& 0.554& 1.369\\[2pt]
133792&\ion{Fe}{i} &144& 35.67&  1.98&$1.345\times10^6$&$0.539\times10^6$& 2.709& 0.265& 0.492\\
      &\ion{Cr}{ii}& 83& 40.17&  2.44&\llap{$-$}$8.624\times10^5$&$6.435\times10^5$& 2.328& 0.217& 0.511\\[2pt]
137949&\ion{Fe}{i} & 53& 52.75&  9.36&$2.456\times10^7$&$0.409\times10^7$& 4.175& 0.651& 1.632\\
      &\ion{Cr}{ii}& 19& 84.13& 13.82&$1.523\times10^7$&$0.749\times10^7$& 4.559& 0.966& 1.382\\
\hline
\end{tabular}
\end{table}