To see the hitsograms that contain the data from which these plots draw follow this link Run 11 Beam Background Study: Barrel vs. Endcap Hits for W Trigger.

 These are the histograms for W triggers in the barrel. On the left are Eta-Phi plots of the barrel and on the right Eta-Phi plots of the endcap. From top to bottom the plots below are for 7-bit bXing = [0,30] , [31,39] , [40,110] , [111,119].

 These are the histograms for W triggers in the endcap. On the left are Eta-Phi plots of the endcap and on the right Eta-Phi plots of the barrel. From top to bottom the plots below are for 7-bit bXing = [0,30] , [31,39] , [40,110] , [111,119].