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\begin{document}
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\begin{center}
{\bf \LARGE
Longitudinal Structure Function $F_L$ at high {\boldmath{$Q^2$}} }
\end{center}

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\section{\large Figure captions}
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\large
\noindent

{\it Figure 1.} Control plots (scattered electron energy and 
polar angle, $E-P_z$) for the H1 $e^-p$ data 98/99
in the region $90 < Q^2 < 900$~GeV$^2$, $0.63 < y < 0.90$,
and $E'_e \geq 6$~GeV. The background is subtracted 
using wrong charge candidates.

{\it Figure 2.} Control plots (scattered positron energy and 
polar angle, $E-P_z$) for the H1 $e^+p$ data 99/00
in the region $90 < Q^2 < 900$~GeV$^2$, $0.63 < y < 0.90$,
and $E'_e \geq 6$~GeV. The background is subtracted 
using wrong charge candidates.

{\it Figure 3.} Study of the charge asymmetry of the fake electron 
candidates
using tagged photoproduction events and wrong charge candidates
in the H1 $e^-p$ 98/99 and $e^+p$ 99/00 data samples. The ratio of 
negative and positive fake candidates $(-/+)$
was found to be $1.0 \pm 0.1$ .

{\it Figure 4.} Reduced NC cross section $\tilde{\sigma}_{NC}$ for the
H1 $e^-p$ 98/99 data. The H1 preliminary results
for extension to high $y=0.75$ 
are shown as solid points and
the standard analysis results (Desy Preprint 00-187) as open points.
The low $Q^2$ H1 data 96/97 (Desy Preprint 00-181) are shown
as open triangles. 
The red solid line represents calculation of the
reduced cross section using parton densities from
the H1 NLO QCD fit to the H1 $e^+p$ 94/97 data and 
fixed target experiments data (H1 97 PDF Fit, Eur. Phys. J. C13 (2000) 609). 
$\tilde{\sigma}_{NC}$ for the extreme case of 
$F_L=0$ is given by black dashed line.
  
{\it Figure 5.} Reduced NC cross section $\tilde{\sigma}_{NC}$ for the
H1 $e^+p$ 99/00 data. The H1 preliminary results
for extension to high $y=0.75$ 
are shown as solid points and
the standard analysis results (H1 preliminary for ICHEP2000) as open points.
The low $Q^2$ H1 data 96/97 (Desy Preprint 00-181) are shown
as open triangles.
The red solid line represents calculation of the
reduced cross section using parton densities from
the H1 NLO QCD fit to the H1 $e^+p$ 94/97 data and 
fixed target experiments data (H1 97 PDF Fit, Eur. Phys. J. C13 (2000) 609). 
$\tilde{\sigma}_{NC}$ for the extreme case of 
$F_L=0$ is given by black dashed line.
  
{\it Figure 6.} The longitudinal
structure function $F_L(x,Q^2)$ obtained using the H1 $e^-p$ 98/99 data
(blue points) and the H1 $e^+p$ 99/00 data (red points).
Statistical and total errors are given as inner and outer error bars
respectively.
The yellow band represents the uncertainty of the $F_L$  NLO QCD calculation
using the H1 97 PDF Fit (Eur. Phys. J. C13 (2000) 609).
The extreme cases of $F_L=0$ and  $F_L=F_2$
(from the H1 97 PDF Fit) are shown as solid and dashed lines. 

\end{document}




