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<!-- DOI: 10.1051/0004-6361/200811117 -->

<h2 class="sec">Online Material</h2>

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<tr><td><!-- init Label --><A NAME="fig_mu97contours">&#160;</A><!-- end Label--><A NAME="1536"></A><A NAME="figure1282"
 HREF="img152.png"><IMG
 WIDTH="190" HEIGHT="232" SRC="Timg152.png"
 ALT="\begin{figure}
\par\includegraphics[width=17cm]{1117fig11.eps}
\end{figure}"></A><!-- HTML Figure number: 11 --></td>
<td class="img-txt"><span class="bold">Figure 11:</span><p>
G-band image at 
<!-- MATH: $\langle\mu\rangle = 0.97$ -->
<IMG
 WIDTH="61" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img68.png"
 ALT="$\langle \mu \rangle = 0.97$">
(the same as in Fig.&nbsp;<a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_imagemu97">1</a>), with the overlaid contours of the features classified using the reject option. The faculae are contoured in green, the BPs in yellow and the rejected features in red. The contours correspond to the border of the features as defined by the segmentation map (corresponding to the lowest MLT&nbsp;level 
<!-- MATH: $C_{\rm G} = 0$ -->
<IMG
 WIDTH="43" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img16.png"
 ALT="$C_{\rm G} = 0$">). Tickmarks are in arcseconds. The corresponding original image without contours is presented in Fig.&nbsp;<a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_imagemu97">1</a>.</p></td>
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<tr><td><!-- init Label --><A NAME="fig_mu6contours">&#160;</A><!-- end Label--><A NAME="1537"></A><A NAME="figure1291"
 HREF="img153.png"><IMG
 WIDTH="190" HEIGHT="236" SRC="Timg153.png"
 ALT="\begin{figure}
\par\includegraphics[width=17cm]{1117fig12.eps}
\end{figure}"></A><!-- HTML Figure number: 12 --></td>
<td class="img-txt"><span class="bold">Figure 12:</span><p>
G-band image at 
<!-- MATH: $\langle \mu \rangle = 0.6$ -->
<IMG
 WIDTH="54" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img48.png"
 ALT="$\langle \mu \rangle = 0.6$">
(the same as in Fig.&nbsp;<a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_imagemu6">2</a>), with the overlaid
contours of the features classified using the reject option (see caption of Fig. <a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_mu97contours">11</a>). The corresponding original image without contours is presented in Fig.&nbsp;<a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_imagemu6">2</a>.</p></td>
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<tr><td><!-- init Label --><A NAME="fig_mu9contours">&#160;</A><!-- end Label--><A NAME="1538"></A><A NAME="figure1300"
 HREF="img154.png"><IMG
 WIDTH="179" HEIGHT="246" SRC="Timg154.png"
 ALT="\begin{figure}
\par\includegraphics[width=16cm,clip]{1117fig13.eps}
\end{figure}"></A><!-- HTML Figure number: 13 --></td>
<td class="img-txt"><span class="bold">Figure 13:</span><p>
G-band image at 
<!-- MATH: $\langle \mu\rangle = 0.9$ -->
<IMG
 WIDTH="55" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img133.png"
 ALT="$\langle \mu \rangle = 0.9$">,
with the overlaid contours of the features classified using the reject option (see caption of Fig.&nbsp;<a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_mu97contours">11</a>). The original field of view has been slightly cropped horizontally for this display. The direction of the closest limb is upwards.</p></td>
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<tr><td><!-- init Label --><A NAME="fig_imagemu9">&#160;</A><!-- end Label--><A NAME="1539"></A><A NAME="figure1307"
 HREF="img155.png"><IMG
 WIDTH="180" HEIGHT="246" SRC="Timg155.png"
 ALT="\begin{figure}
\par\includegraphics[width=16cm,clip]{1117fig14.eps}
\end{figure}"></A><!-- HTML Figure number: 14 --></td>
<td class="img-txt"><span class="bold">Figure 14:</span><p>
Original G-band image at 
<!-- MATH: $\langle\mu\rangle = 0.9$ -->
<IMG
 WIDTH="55" HEIGHT="26" ALIGN="MIDDLE" BORDER="0"
 SRC="img133.png"
 ALT="$\langle \mu \rangle = 0.9$">
without overlaid contours, for comparison with Fig.&nbsp;<a href="/articles/aa/full_html/2009/28/aa11117-08/aa11117-08.html#fig_mu9contours">13</a>.</p></td>
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