Hello, to run the series of fits for the study of the breco and the mes systematics i committed the following files: fit_all.csh fit_all_npi0.csh fit_all_res.csh scriptfit_all.csh envfit_all.csh runfit_all.csh .)fit_all.csh this is the files to run. set the FILEDATA for the different cases set the directory of the output (delete it before begin) call fit_all_npi0.csh call fit_all_res.csh .)fit_all_res.csh set the fits for the study in function of the cut in integrated purity call runfit_all.csh .)fit_all_npi0.csh set the fits for the study in function of the number of pi0 call scriptfit_all.csh .)runfit_all.csh set INTPUR call scriptfit_all.csh .)scriptfit_all.csh the same of scriptfit.csh Used a different file to have the "all" study independent .)envfit_all.csh the same of envfit.csh but with the variable setted in the other files commented In all files you have to change the path of your IslBrecoilUser. Luigi