Table 3.

Average beam-spot position and size for pp collision data in 2010, 2011 and 2012 for different ${\mathit{\beta }}^{\ast }$ settings. The errors given in the table are the RMS spread of the parameters during the corresponding time period

Year	${\mathit{\beta }}^{\ast }$ (m)	${\overline{x}}_{\mathcal{L}}$ (mm)	${\overline{y}}_{\mathcal{L}}$ (mm)	${\overline{z}}_{\mathcal{L}}$ (mm)	${\mathit{\sigma }}_{x\mathcal{L}}$ ($\mathrm{\mu }$m)	${\mathit{\sigma }}_{y\mathcal{L}}$ ($\mathrm{\mu }$m)	${\mathit{\sigma }}_{z\mathcal{L}}$ (mm)
2010	11	$-0.347\pm 0.015$	$0.611\pm 0.018$	$0.9\pm 3.5$	$49\pm 8$	$60\pm 12$	$29\pm 3$
2010	2	$-0.364\pm 0.031$	$0.647\pm 0.009$	$-1.2\pm 2.2$	$30\pm 5$	$39\pm 12$	$36\pm 3$
2010	3.5	$0.081\pm 0.033$	$1.099\pm 0.029$	$-3.0\pm 4.6$	$41\pm 4$	$44\pm 6$	$63\pm 3$
2011	1.5	$-0.050\pm 0.018$	$1.059\pm 0.051$	$-6.2\pm 3.8$	$26\pm 2$	$24\pm 2$	$57\pm 3$
2011	1.0	$-0.052\pm 0.009$	$1.067\pm 0.013$	$-6.7\pm 1.5$	$21\pm 2$	$20\pm 1$	$56\pm 3$
2012	0.6	$-0.291\pm 0.016$	$0.705\pm 0.046$	$-7.3\pm 4.7$	$15\pm 2$	$15\pm 1$	$48\pm 2$