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\begin{document}
\begin{tabular}{lcc}
\hline
 Source          &  $\Delta \sigma\,$[pb]   & $\Delta\sigma/\sigma$ [\%]   \\\hline
 Luminosity    & 0.79  & 2.00 \\ \hline
Statistical   & 0.70 & 1.77 \\ \hline 
Tracking      & 0.40  & 1.01 \\
Efficiency Closure & 0.24 & 0.61 \\ 
Trigger        & 0.21 &  0.54 \\
Background    & 0.19 & 0.48 \\ 
Identification & 0.10 &  0.25 \\
FSR            & 0.07 & 0.18 \\
Calibration  & $<4.0\times 10^{-3}$ & $<0.01$ \\ \hline 
Total Systematic (excl. lumi.) & 0.56 & 1.42 \\ \hline
\end{tabular}
\end{document}
