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\begin{document}
\begin{tabular}{lc}
\hline
Source & Uncertainty (\%) \\
\hline
$\Lambda\xspace^+_ c\xspace\xspace\xspace$ veto & 0.2 \\
Fit model & 2.0 \\
Particle identification & 2.1 \\
Efficiency modelling & 0.8 \\
\hline
Total & 3.0 \\
\hline
\end{tabular}
\end{document}
