\begin{table}%t1
\par
%\centering
 \caption{The estimation of precision of the Pul-3
catalogue for different declination zones.} \label{Tab1}
\begin{tabular}{cccrrccrr}
   \hline \hline
   Declination zone&\multicolumn{4}{c}{Internal precision}&\multicolumn{4}{c}{External precision } \\
   &\multicolumn{4}{c}{}&\multicolumn{4}{c}{(relative to Tycho-2)}\\
&$\epsilon_{\alpha}\cos\delta$&$\epsilon_{\delta}$&$\epsilon_{\mu_{\alpha}\cos\delta}$&$\epsilon_{\mu_{\delta}}$
&$\sigma_{\alpha\cos\delta}$&$\sigma_{\delta}$&$\sigma_{\mu_{\alpha}\cos\delta}$&$\sigma_{\mu_{\delta}}$\\
&\multicolumn{2}{c}{mas}&\multicolumn{2}{c}{mas/yr}&\multicolumn{2}{c}{mas}&\multicolumn{2}{c}{mas/yr}\\\hline
   $-5\degr\div5\degr$&90&98&9.8&10.7&141&160&9.2&10.2\\
\par
   $5\degr\div15\degr$&86&86&9.2& 9.4&136&159&8.7&10.0\\
\par
   $15\degr\div25\degr$&79&88&7.9&8.9&130&148&9.2&9.1\\
\par
   $25\degr\div35\degr$&85&85& 9.1& 9.2&154&159&10.2&11.2\\
\par
   $35\degr\div45\degr$&79&78&8.8&8.8&151&157&9.7&10.1\\
\par
   $45\degr\div55\degr$&79&82&8.5&8.6&157&159&11.4&12.5\\
\par
   $55\degr\div65\degr$&77&80&8.4&8.7&162&175&9.9&12.1\\
\par
   $65\degr\div75\degr$&74&78&8.0&8.5&126&142&8.0&9.8\\
\par
   $75\degr\div85\degr$&73&78&8.5&8.5&127&142&8.8&9.9\\\hline
    for full catalogue &80&84&8.7&9.1&142&155&9.2&10.1\\
   \hline
\end{tabular}
\end{table}