Following the successful regeneration of GCR files for 2-nd year data (after novermeber 2009) I have produced 6 asymmetry calibration files for 6 Ms (~ 2 month) period each:
276000000 <MET< 282000000 - fit_gcrhists_lkhd_276m_280m_bigsum.gcr_asym_hist.xml
...
The evolution of asymmetry calibration over 2 years is shown on the following plots: 
