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Summary:

1. Finished “cosmetic” stuff for plot-fit code, added log-scale and added the “ratio” plot.
2. Fit the data with background function from EXO-16-032:
   1. First plot:
   2. Silvio proposed to reduce the range of fit to 300-800 GeV:
   3. Add L1_HTT240 to the selection that I am using to the analysisClass.cc and to my fit-plot script. Check locally if it works. Made plot with L1_HTT240 == 1 from histogram and from tree using the selection. In ratio plot draw only the histogram within fit range. Fit looks nice, but the Hesse matrix is not positive defined (FROM HESSE STATUS=NOT POSDEF). Can be caused by correlation bet