\begin{table}%t4
%\centering
\par
\caption{The observed H$\alpha$ data. The first column denotes whether
or not a line-effect was detected; the second column shows the
contrast between the line-peak and the continuum to an accuracy of~0.1; the equivalent-widths and {\it FWHM} are measured to an accuracy of
$\sim$5\%. The continuum polarization was measured from featureless
sections either side of the emission line. As the R 40 data from
consecutive nights showed no variability, the data was combined to
improve the {\it S/N}. The quoted uncertainties do not include the external
errors, which we estimate to be 0.1--0.2\% (see Sect.~\ref{sec:obs}).\label{tab:Hadata}}
  \begin{tabular}{lcccccc}
	\hline\hline
      	Name 	& Line-   & Line-cont. & {\it EW}    & {\it FWHM}  &
      	\multicolumn{2}{c}{Cont. Pol. ($R$-band)} \\ 
			& effect? & contrast       & (\AA) & (\kms)  & $P$ (\%) & $\theta$ (\deg) \\
      	\hline 
      	%\textrm
	\emph{Galactic} & & & & & \\
	\object{AG Car} \tiny{(6/5/94)}& Y	  & 17.5	& --80 & 117& 0.95 $\pm$ 0.01 & 160.1 $\pm$ 0.2  \\	  
\vspace{2mm}'' \tiny{(10/2/03)}	& Y 	  & 25	& --119  & 150  & 1.09 $\pm$ 0.01 & 132.6 $\pm$ 0.4  \\ 
\par
	\object{HR Car} \tiny{(16/3/92)}	& Y 	  & 16	& --59   & 115 & 4.22 $\pm$ 0.01 & 129.7 $\pm$ 0.1 \\
\vspace{2mm} '' \tiny{(10/2/03)}	& Y 	  & 18	& --90   & 95  & 3.37 $\pm$ 0.01 & 133.9 $\pm$ 0.1   \\
\par
	\object{$\eta$ Car}	& Y	  & 100	&	--1480 & 450 & 5.71 $\pm$ 0.04 & 76.4 $\pm$ 0.2  \\
\par
      \object{Hen 3-519} \tiny{(6/5/94)}	& N	  & 17	& --197 & 475 & 2.90 $\pm$ 0.02 & 97.6 $\pm$ 0.2 \\
\vspace{2mm} '' \tiny{(10/2/03)}	& Y  	  & 22		  	      & --220  & 435  & 3.05 $\pm$ 0.01 & 99.2 $\pm$ 0.1  \\
\par
	WRA 751	& N  	  & 4.2		         & --10   & 90 & 2.29 $\pm$ 0.01 & 58.7 $\pm$ 0.1  \\
	\object{P Cyg} \tiny{(10/12/03)}	& N 	  & 18		      & --63   & 167 & 0.99 $\pm$ 0.02 & 29.3 $\pm$ 0.4 \\
\vspace{2mm}
	''    \tiny{(13/12/03)}	& N 	  & 18		  	      & --64   & 170  & 0.93 $\pm$ 0.02 & 29.3 $\pm$ 0.6 \\
      %HD 160529	\tiny{(18/9/02)}& N 	  & 1.8  & -4.7  & 135 & 7.42 $\pm$ 0.01 & 17.2 $\pm$ 0.1   \\
%\vspace{2mm}
\vspace{2mm}	\object{HD 160529} 	& N 	  & 2		   	      & --4.4  & 80& 6.97 $\pm$ 0.01 & 21.2 $\pm$ 0.1 	\\
\par
	\emph{SMC} & &&&&& \\
\par
\vspace{2mm}	R 40	& N	  & 4.6		      & --15   & 87& 0.28 $\pm$ 0.03 & 92.9 $\pm$ 2.6 	\\
	\emph{LMC} &		&	&	&	&& \\
	\object{S Dor}	& ?	  & 8.3		  	      & --34   & 100 & 0.24 $\pm$ 0.02 & 72.6 $\pm$ 2.6 \\
	R 71  & N	  & 2.0 	        & --7.8  & 200 & 0.31 $\pm$ 0.03 & 60.1 $\pm$ 2.3 \\	
	R 110 & Y	  & 26		  	      & --96   & 100 & 1.50 $\pm$ 0.03 & 32.1 $\pm$ 0.6 \\
	R 116 & N	  & 2.5			      & --6.6  & 130 & 0.51 $\pm$ 0.02 & 28.6 $\pm$ 1.0 \\
	R 127 & Y	  & 40			      & --114  & 78 & 0.50 $\pm$ 0.01 & 33.4 $\pm$ 0.5 \\
	R 143 & N	  & 6.4		 	      & --20   & 100 & 2.93 $\pm$ 0.02 & 73.3 $\pm$ 0.2 \\
      \hline
      \end{tabular}
     \end{table}