\begin{table}%t3
\caption{\label{fe21}Measured Fe~{\sc xxi} counts obtained from the available LETGS spectra.}
%\centerline
{\begin{tabular}{p{.9cm}rrrr}
\hline\hline
& 128.73~\AA & 117.5~\AA & 102.22~\AA & 98.87~\AA \\
 $transm.^a$ &      0.8050&      0.8491&      0.8993&      0.9115\\
 $A_{\rm eff}$/cm$^2$&  3.67&  6.17&  6.71&  7.24\\
    $\beta$~Cet& 587.4~$\pm$~31.6& 178.8~$\pm$~23.1& 198.9~$\pm$~24.7& 98.20~$\pm$~17.6\\
  $\lambda$~And& 471.4~$\pm$~29.4& 139.5~$\pm$~20.7& 144.3~$\pm$~24.9& 109.7~$\pm$~18.9\\
         AD~Leo& 61.17~$\pm$~14.2& 15.48~$\pm$~11.7& 21.64~$\pm$~12.9& 14.89~$\pm$~9.14\\
           Algol& 354.0~$\pm$~25.4& 120.3~$\pm$~19.4& 145.3~$\pm$~19.9& 77.86~$\pm$~14.3\\
         Capella& 1086.~$\pm$~43.1& 501.7~$\pm$~33.9& 362.0~$\pm$~36.6& 69.97~$\pm$~21.1\\
         EK~Dra& 52.02~$\pm$~10.4& 28.27~$\pm$~11.5& 9.360~$\pm$~12.1&                -- \\
          HR1099& 386.8~$\pm$~25.6& 156.4~$\pm$~19.6& 142.3~$\pm$~22.2& 63.43~$\pm$~15.4\\
         UX~Ari& 167.6~$\pm$~19.3& 71.58~$\pm$~17.6& 35.31~$\pm$~17.0& 55.07~$\pm$~13.0\\
         YY~Gem& 46.10~$\pm$~10.5& 29.74~$\pm$~10.7& 8.531~$\pm$~9.01& 17.86~$\pm$~7.87\\
\hline
\end{tabular}}
\smallskip
$^a$ISM transmission using $N$(H{\sc i}) $= 10^{18}$, $N$(He{\sc ii})/$N$(H{\sc i}) = 0.09, $N$(He{\sc ii})/$N$(H{\sc i}) = 0.01.
\end{table}