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I have run over the latest froduction of root files from Alessio and produced the best I could do for representation. It is all contained, including the explenation in http://www.slac.stanford.edu/~rfaccini/phys/vub/envelopes/envelopes.html The reference chi^2 do not lead often to the same conclusions as the plots posted the other day by Urs. I guess this is due to the binning, but it should be investigated because it lowers (if possible) my trust in the meaning of the chi^2. For istance the distribution of MM2 after lepton cuts in the depleted sample was 31 for 28 Dof in Urs's plots while it is 99 for 24 Dof in Alessio's ... This said that the plots are useful to see the impact of the systematics. In general the variation of the D decays BF are the contributions with the largest impact in all quantities. please let me know if there is anything I can do to improve the grafical representation or the explanation of the plots. ciao ric