{

  TGraph * gr_letratio = new TGraph();

    char  finname[50];
    int j = 1;
    
    Double_t x, q;
    q = 0.5; // 0.5 for "median"
    
    
    //  for (int j = 0; j<5;j++){
    for (int i = 0; i<26;i++){

      sprintf(finname, "jobs%i/runjob%i001_eventdata_out.root",j,i);
      TFile * f = new TFile(finname,"OPEN");
      TH1F * h = (TH1F*)f->Get("h_spratio");
      cout << i << " " << h->GetMean() << " +/- " << h->GetRMS() << endl;
      h->ComputeIntegral(); // just a precaution
      h->GetQuantiles(1, &x, &q);
      std::cout << "median = " << x << std::endl;

      
      h->Delete();
      f->Close();
      
    }
    //  }
  

}