All Figures

$\begin{figure} \par\includegraphics[width=8cm,clip]{2214fig1.ps} \end{figure}$ Figure 1: Histograms of the FWHM of the two Gaussians weighting the blue- (thick line) and red-shifted (thin line) contributions as inferred from inversion of the observed He D₃ intensity profiles.
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In the text

$\begin{figure} \par\includegraphics[width=7.5cm,clip]{2214fig2a.ps}\hspace*{6mm} \includegraphics[width=7.5cm,clip]{2214fig2b.ps} \end{figure}$ Figure 2: Histograms of the errors for the inversion of a broadened database of profiles (the "observations'') with the original, unbroadened database. On the left, azimuth of the magnetic field in the LOS reference frame (defined by the line-of-sight and the meridional plane through the scattering point), and on the right, the magnetic inclination in the same reference. Estimates of the FWHM of the error distribution and of the 90% level are given in the figure.
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In the text

$\begin{figure} \par\includegraphics[width=7.6cm,clip]{2214fig3a.ps}\hspace*{6mm} \includegraphics[width=6.9cm,clip]{2214fig3b.ps} \end{figure}$ Figure 3: On the left panel, histogram of the error in field strength for inversion of broadened synthetic profiles with the original unbroadened database. On the right, scatter plot of the errors in the inverted field strength as a function of the true field strength, showing that error increases with field strength.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig4.ps} %\end{figure}$ Figure 4: Histogram of errors in the inversion of the magnetic-field azimuth in the LOS reference frame, excluding Stokes V from the inversion. The database used for this figure is composed of the artificially broadened profiles described previously.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig5.ps} %\end{figure}$ Figure 5: Plot of inferred inclination $\Theta _B$ in the local frame vs. azimuth $\Phi _B$ in the LOS frame.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig6.ps} %\end{figure}$ Figure 6: Exposure # 19 of the time series. In the background, the slit-jaw image in H $\alpha$ showing the position of the slit (horizontal) over the spicules. The distance between the hairlines is 1 arcmin exactly with spatial resolution of 0.29 arcsec/pixel. The slit was opened to slightly over 1 arcsec. Superimposed on the same column (with a vertical offset), we also plot the inverted solution for the magnetic field vector for each point on the slit. The direction of the lines is given by the azimuth in the LOS reference frame, and their length by the field strength. The level of gray of each line is scaled according to the intensity of the observed feature in the slit-jaw image.
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In the text

$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig7.ps} %\end{figure}$ Figure 7: Distribution of field strengths from inversion of the Stokes parameters plotted in 5 G bins.
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In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{2214fig8.ps} \end{figure}$ Figure A.1: Contour plot of function $Z(\Theta_B,\Phi_B) = 3~\sin^2 \Theta_B\ \times$ $(\sin^2 \Theta_B \cos^2 \Phi_B - 1)$ in terms of inclination $\Theta _B$ and azimuth $\Phi _B$ in the line-of-sight reference frame. Contours delimit the connected region of the plane where $90^\circ$ ambiguity is possible.

In the text

$\begin{figure} \par\includegraphics[width=8cm,clip]{2214fig1.ps} \end{figure}$	Figure 1: Histograms of the FWHM of the two Gaussians weighting the blue- (thick line) and red-shifted (thin line) contributions as inferred from inversion of the observed He D₃ intensity profiles.
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$\begin{figure} \par\includegraphics[width=7.6cm,clip]{2214fig3a.ps}\hspace*{6mm} \includegraphics[width=6.9cm,clip]{2214fig3b.ps} \end{figure}$	Figure 3: On the left panel, histogram of the error in field strength for inversion of broadened synthetic profiles with the original unbroadened database. On the right, scatter plot of the errors in the inverted field strength as a function of the true field strength, showing that error increases with field strength.
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$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig4.ps} %\end{figure}$	Figure 4: Histogram of errors in the inversion of the magnetic-field azimuth in the LOS reference frame, excluding Stokes V from the inversion. The database used for this figure is composed of the artificially broadened profiles described previously.
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$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig5.ps} %\end{figure}$	Figure 5: Plot of inferred inclination $\Theta _B$ in the local frame vs. azimuth $\Phi _B$ in the LOS frame.
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$\begin{figure} \par\includegraphics[width=8.8cm,clip]{2214fig7.ps} %\end{figure}$	Figure 7: Distribution of field strengths from inversion of the Stokes parameters plotted in 5 G bins.
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