The total values for data delivered to and recorded by CMS in 2012, as of June 18
The total values for data delivered to and recorded by CMS in 2011 (more
The LHC began its 2012 run in early April, colliding protons at a world-record centre-of-mass energy of 8 TeV. In just over two months, CMS has recorded more data than in the 2011 run. As of the short technical stop starting June 18, the LHC had delivered 6.65 fb−1 (inverse femtobarns) of collisions to CMS, of which CMS has recorded 6.15 fb−1, at an average efficiency of over 92%.
The efficiency of data collection is an improvement on 2011's value of around 91%, when CMS recorded 5.56 fb−1 of the 6.10 fb−1 delivered.
The higher collision energy — 8 TeV in 2012 compared to 7 TeV in 2011 — also means that CMS has more sensitivity for many processes, including searches for new physics. You can stay up-to-date with the latest values for data recorded by CMS at http://bit.ly/CMSLumi.
 Definition of TeV
 Definition of femtobarn
2012-06-18, by Achintya Rao