Hi Sheila, there should be a lot (for some runs and MC modes all) of BSemiExcl skimmed events around. For the current status see: http://www.slac.stanford.edu/BFROOT/www/Computing/Operation/skimming/monitor/r18b-skim.html I just found the following number of events from BbkDatasetTcl: SP-1235-BSemiExcl-Run1-R18b 2290536/33038000 SP-1235-BSemiExcl-Run2-R18b 9306874/137532000 SP-1235-BSemiExcl-Run3-R18b 5059151/72096000 SP-1235-BSemiExcl-Run4-R18b 9843582/132326000 SP-1235-BSemiExcl-Run5-R18b 6351516/85966000 SP-1237-BSemiExcl-Run1-R18b 2078370/34034000 SP-1237-BSemiExcl-Run2-R18b 7909240/135190000 SP-1237-BSemiExcl-Run3-R18b 4509752/73858000 SP-1237-BSemiExcl-Run4-R18b 6550595/100738000 SP-1237-BSemiExcl-Run5-R18b 5545340/85748000 Cheers, Wolfgang ----------------------------------------------------------------------------- Wolfgang Menges Queen Mary, University of London SLAC, MS 35 Mile End Road 2575 Sand Hill Road London, E1 4NS, UK Menlo Park, CA 94025, USA ++44 20 7882 3753 ++1 650 926 8503 [log in to unmask] -----------------------------------------------------------------------------