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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig9.eps}\end{figure}$

Figure 9:

Bi-dimensional stratification of Mg, Al, Si, and P for a $T_{\rm eff}=8500$ K model. Abundances (expressed in $\log{({N_X}/{N_H})}+12$ ) are shown on a gray-scale: the y-axis indicates the layer number (the corresponding depth in the atmosphere can be taken from Fig. 1, the bottom axis the position along the magnetic meridian, counted from the magnetic pole (0 $^\circ$ ) with 20 kG towards the equator (90 $^\circ$ ). The vertical bar (at about 62 $^\circ$ ) visualises the grey level corresponding to the solar abundance of Fe (given in brackets beside the name of the element). The scaling of the grey levels is such that abundances lower than 10^-3 time the solar value are white, and abundances greater than 10⁴ time the solar value are black.

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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig10.eps}\end{figure}$	Figure 10: Bi-dimensional stratification of Ca, Ti, V, and Cr for a $T_{\rm eff}=8500$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig11.eps}\end{figure}$	Figure 11: Bi-dimensional stratification of Mn, Fe, Co, and Ni for a $T_{\rm eff}=8500$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig12.eps}\end{figure}$	Figure 12: Bi-dimensional stratification of Cu, Zn, Ga, and Hg for a $T_{\rm eff}=8500$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig13.eps}\end{figure}$	Figure 13: Bi-dimensional stratification of Mg, Al, Si, and P for a $T_{\rm eff}=10~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig14.eps}\end{figure}$	Figure 14: Bi-dimensional stratification of Ca, Ti, V, and Cr for a $T_{\rm eff}=10~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig15.eps}\end{figure}$	Figure 15: Bi-dimensional stratification of Mn, Fe, Co, and Ni for a $T_{\rm eff}=10~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig16.eps}\end{figure}$	Figure 16: Bi-dimensional stratification of Cu, Zn, Ga, and Hg for a $T_{\rm eff}=10~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig17.eps}\end{figure}$	Figure 17: Bi-dimensional stratification of Mg, Al, Si, and P for a $T_{\rm eff}=12~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig18.eps}\end{figure}$	Figure 18: Bi-dimensional stratification of Ca, Ti, V, and Cr for a $T_{\rm eff}=12~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig19.eps}\end{figure}$	Figure 19: Bi-dimensional stratification of Mn, Fe, Co, and Ni for a $T_{\rm eff}=12~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig20.eps}\end{figure}$	Figure 20: Bi-dimensional stratification of Cu, Zn, Ga, and Hg for a $T_{\rm eff}=12~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig21.eps}\end{figure}$	Figure 21: Bi-dimensional stratification of Mg, Al, Si, and P for a $T_{\rm eff}=14~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig22.eps}\end{figure}$	Figure 22: Bi-dimensional stratification of Ca, Ti, V, and Cr for a $T_{\rm eff}=14~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig23.eps}\end{figure}$	Figure 23: Bi-dimensional stratification of Mn, Fe, Co, and Ni for a $T_{\rm eff}=14~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig24.eps}\end{figure}$	Figure 24: Bi-dimensional stratification of Cu, Zn, Ga, and Hg for a $T_{\rm eff}=14~000$ K model. Same annotations as in Fig. 9.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig25.eps}\end{figure}$	Figure 25: 1D stratifications for the zero field case and four atmospheres with ( $T_{\rm eff}=8500, 10000, 12~000, 14~000$ K). The heavy-grey dashed line indicates the initial (solar) abundance. Case for Mg, Al, Si, and P.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig26.eps}\end{figure}$	Figure 26: Same as Fig. 25 but for Ca, Ti, V, and Cr.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig27.eps}\end{figure}$	Figure 27: Same as Fig. 25 but for Mn, Fe, Co, and Ni.
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$\begin{figure}\par\includegraphics[width=15cm,clip]{13772fig28.eps}\end{figure}$	Figure 28: Same as Fig. 25 but for Cu, Zn, Ga, and Hg.
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