All Figures

$\begin{figure} \par\includegraphics[width=16cm,clip]{9670f1.ps} \end{figure}$ Figure 1: Phase distribution of the $\beta$ observations, see Table 2. The horizontal lines represent the mean value of $\beta$ outside eclipses (solid) and the rms error of one observation (dotted). The vertical lines show the phase intervals of the eclipses (dashed, central eclipses) and their duration (dotted).
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In the text

$\begin{figure} \par\includegraphics[width=16cm,clip]{9670f2.ps} \end{figure}$ Figure 2: y light curve and b-y and u-b colour curves (instrumental system) for AD Boo.
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In the text

$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f3.ps} \end{figure}$ Figure 3: y light curve and b-y and u-b colour curves (instrumental system) for HW CMa.
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In the text

$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f4.ps} \end{figure}$ Figure 4: y light curve and b-y and u-b colour curves (instrumental system) for SW CMa.
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In the text

$\begin{figure} \par\includegraphics[width=7cm,clip]{9670f5.ps} \end{figure}$ Figure 5: Apsidal motion for SW CMa. O-C are the residuals (days) from the linear part of the apsidal motion ephemeris defined by the parameters given in Table 4. The full and dashed curves represent predictions from the apsidal motion parameters for primary (triangles) and secondary (squares) eclipses, respectively. Only the photoelectric observations are shown.
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In the text

$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f6.ps} \end{figure}$ Figure 6: y light curve and b-y and u-b colour curves (instrumental system) for V636 Cen.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9670f7.ps} \end{figure}$ Figure 7: Apsidal motion for V636 Cen. O-C are the residuals (days) from the linear part of the apsidal motion ephemeris defined by the parameters given in Table 5. The full and dashed curves represent predictions from the apsidal motion parameters for primary (triangles) and secondary (squares) eclipses, respectively. Only the ${\it uvby}$ observations are shown.
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In the text

$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f8.ps} \end{figure}$ Figure 8: y light curve and b-y and u-b colour curves (instrumental system) for VZ Hya.
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In the text

$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f9.ps} \end{figure}$ Figure 9: y light curve and b-y and u-b colour curves (instrumental system) for WZ Oph.
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In the text

$\begin{figure} \par\includegraphics[width=16cm,clip]{9670f1.ps} \end{figure}$	Figure 1: Phase distribution of the $\beta$ observations, see Table 2. The horizontal lines represent the mean value of $\beta$ outside eclipses (solid) and the rms error of one observation (dotted). The vertical lines show the phase intervals of the eclipses (dashed, central eclipses) and their duration (dotted).
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$\begin{figure} \par\includegraphics[width=16cm,clip]{9670f2.ps} \end{figure}$	Figure 2: y light curve and b-y and u-b colour curves (instrumental system) for AD Boo.
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$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f3.ps} \end{figure}$	Figure 3: y light curve and b-y and u-b colour curves (instrumental system) for HW CMa.
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$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f4.ps} \end{figure}$	Figure 4: y light curve and b-y and u-b colour curves (instrumental system) for SW CMa.
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$\begin{figure} \par\includegraphics[width=7cm,clip]{9670f5.ps} \end{figure}$	Figure 5: Apsidal motion for SW CMa. O-C are the residuals (days) from the linear part of the apsidal motion ephemeris defined by the parameters given in Table 4. The full and dashed curves represent predictions from the apsidal motion parameters for primary (triangles) and secondary (squares) eclipses, respectively. Only the photoelectric observations are shown.
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$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f6.ps} \end{figure}$	Figure 6: y light curve and b-y and u-b colour curves (instrumental system) for V636 Cen.
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$\begin{figure} \par\includegraphics[width=7.5cm,clip]{9670f7.ps} \end{figure}$	Figure 7: Apsidal motion for V636 Cen. O-C are the residuals (days) from the linear part of the apsidal motion ephemeris defined by the parameters given in Table 5. The full and dashed curves represent predictions from the apsidal motion parameters for primary (triangles) and secondary (squares) eclipses, respectively. Only the ${\it uvby}$ observations are shown.
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$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f8.ps} \end{figure}$	Figure 8: y light curve and b-y and u-b colour curves (instrumental system) for VZ Hya.
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$\begin{figure} \par\includegraphics[width=16.5cm,clip]{9670f9.ps} \end{figure}$	Figure 9: y light curve and b-y and u-b colour curves (instrumental system) for WZ Oph.
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