void lowT05() {
  gROOT->SetStyle("Plain");

  TCanvas *c1=new TCanvas("c1","Canvas",800,600);
  gStyle->SetOptStat(0);

  TFile *f0=TFile::Open("Fe55Fit_S40_030mV.root");
  TFile *f1=TFile::Open("Fe55Fit_S31_030mV.root");

  f0->cd();
  PeakSignal->SetTitle(";Peak signal (mV);Number of events/mV");
  PeakSignal->GetXaxis()->SetRangeUser(60,159);
  //PeakSignal->GetXaxis()->SetRangeUser(180,280);
  PeakSignal->SetLineColor(2);
  PeakSignal->SetLineWidth(2);
  PeakSignal->GetYaxis()->SetTitleOffset(1.2);
  PeakSignal->Draw();

  f1->cd();
  TH1F *h=PeakSignal;
  double factor=1.0;
  for(int i=0;i<300;i++) {
    h->SetBinContent(i+1,factor*h->GetBinContent(i+1));
    //h->SetBinError(i+1,factor*h->GetBinError(i+1));
  }

  PeakSignal->SetLineStyle(2);
  PeakSignal->SetLineColor(4);
  PeakSignal->SetLineWidth(2);
  PeakSignal->Draw("same");

  TLatex t;
  t.SetTextSize(0.04);  
  t.SetTextColor(2);
  t.DrawLatex(120,1100,"With deep P-well");
  t.SetTextColor(4);
  t.DrawLatex(120,1000,"Without deep P-well");

  c1->Update();
  c1->Print("../lowT05.png");
}