\begin{table}%t1
%\centering
\par
\caption{Estimated monthly means $R_{\rm{m}}$, their errors $\sigma_{\rm{m}}$ and relative
  weights $w_{\rm{m}}$ corresponding to daily sunspot observations $R_{\rm{d}}$ in 1792--1793.
  The best-fit Poisson distribution parameter~$\mu$ is also shown.
  The 2-year mean has been calculated as a weighted average.}
\begin{tabular}{ccccccc}
\hline \hline
month & $R_{\rm{d}}$& $R_{\rm{m}}$ & $\sigma_{\rm{m}}$ & $w_{\rm{m}}$&$\mu$\\
\hline
Jan.~92&24&26&14&0.0051&1.7\\
Apr.~92&96&90&24&0.0017&7\\
Jul.~92&0&7.3&7.7&0.0169&0.9\\
Oct.~92&48&50&18&0.0031&3.6\\
Mar.~93&48&50&18&0.0031&3.6\\
May~93&123&115&26&0.0015&9\\
Aug.~93&24,15,0,0&21.5&16&0.004&1.8\\
Sep.~93&5*0&5&5&0.04&0.13\\
Nov.~93&24&26&14&0.0051&1.7\\
1792--1793 && 16.2 & 7.6 & &\\
\hline 
\end{tabular}
\label{Tab:pois}
\end{table}