{
 
  //  gStyle->SetOptStat(1111);
   // TFile f5("data15sf.root");
   // TH1F *sf15 = (TH1F*)f5.Get("sf15");

   // TGraphAsymmErrors *graph15_n = (TGraphAsymmErrors*)f.Get("graph15_n");
    TFile f1("v18_2627_C.root");
    TGraphAsymmErrors *graph15_n = (TGraphAsymmErrors*)f1.Get("graph18_s");

  //  TFile f2("v18_2526_C_st.root");
  //  TGraphAsymmErrors *graph18_s = (TGraphAsymmErrors*)f2.Get("graph18_s");
   
    Int_t n1=graph15_n->GetN();
    
    TGraphErrors* g3= new TGraphErrors();
    
    Double_t x1=0., y1=0., x2=0., y2=0.;
    Double_t dx1=0.,dy1=0.,       dy2=0.;
    
    Int_t iv=0;
    for (Int_t i1=0; i1<n1; i1++) {
      //  for (Int_t i2=0; i2<n2; i2++) {
            //if (debug) printf("**myTGraphErrorsDivide: %d  %d !  \n",i1,i2);
            
            graph15_n->GetPoint(i1,x1,y1);
            dx1  = graph15_n->GetErrorX(i1);
            dy1  = graph15_n->GetErrorY(i1);
            g3->SetPoint(i1, x1+0.07,y1);
            g3->SetPointError(i1, dx1,dy1);
        //}
    }
    
    
    TCanvas *c4 = new TCanvas("c4","c4");
  //  sf15->Draw();

  //  graph18_s->SetMinimum(0.6);
  //  graph18_s->SetMaximum(1.2);

  //  graph15_n->Draw();
    g3->SetMarkerStyle( kCircle);
    g3->SetMarkerColor(2);
    g3->SetLineColor(2);
//g3->SetMarkerSize(2);

    g3->Draw();
    graph15_n->SetMarkerStyle(1);
    graph15_n->SetMarkerSize(4);

    graph15_n->Draw("SAME");

    
    /*
    graph15_n->SetLineColor(2);
    graph15_n->SetMarkerStyle(4);
    graph15_n->SetMarkerSize(12);
 //   graph15_n->Draw("SAME");
    */
    
    
}