\begin{table}%t1
\caption{\label{tab1}Some of the values used in the Ca~{\sc ii} calculations.}
\small%\centering
\par
\begin{tabular}{cccccc}
\hline
\hline
line & $H$    &    $K$    &  8498 &   8542 & 8662 \\
\hline
$h$ (km) &      2040 & 2000 & 1200 & 1460 & 1380    \\
$n_{\rm H}$ (cm$^{-3}$) &  $1.4 \times 10^{11}$  &  $1.7\times 10^{11}$& $7.6 \times 10^{12}$ & $1.7 \times 10^{12}$  &$2.5 \times 10^{12}$ \\
$T$(K)   &       8780 & 8550 & 6475 & 6930 & 6800   \\
$\bar{n} $&  $0.12   \times 10^{-3}$     &  $0.13  \times 10^{-3}$&  $13 \times 10^{-3}$  & $8.7 \times 10^{-3}$   &    $9.1\times 10^{-3}$ \\
$w$ & 0.031     & 0.031  & 0.012  & 0.028  &  0.036 \\
\hline
\end{tabular}
\end{table}