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\begin{document}
  
  
  \begin{tabular}{lc}
    Source & Value \\ \hline
    Candidate multiplicity & $\pm 1.2$ \\
    Decay model & $\pm 1.0$ \\
    Signal and background modelling & $\pm 1.8$ \\
    Contamination from non-resonant decays & $-6.0$ \\
    Track efficiency & $\pm 3.0$ \\
    $B^0_{sH}/B^0_{sL}$ fractions & $\pm 2.1$ \\ \hline
\rule{0pt}{2.5ex}  
    	Total & $^{+4.4}_{-7.4}$ \\
  \end{tabular}
  
\end{document}
