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\toprule
\multicolumn{3}{l}{Uncertainty on relative normalisation} \\
& Counter stability & \phantom{7}0.5 \\
& $\mu$ variation among bunch crossings & \phantom{7}0.5 \\ \midrule
\multicolumn{3}{l}{Uncertainty on absolute normalisation} \\
& Statistical error of the VDM scan& \phantom{7}0.2 \\
& Total beam current & \phantom{7}2.7 \\
& Individual bunch population & \phantom{7}0.9 \\
& Protons outside nominal bunches & \phantom{7}0.4\\
& Length scale calibration & \phantom{7}1.0\\
& Non-reproducibility in similar scans at $\sqrt{s}=7\mathrm{\,Te\kern -0.1em V}\xspace$ & \phantom{7}2.1\\ \midrule
& Total uncertainty & \phantom{7}3.8 \\ 
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