{
    double x[15] = {
      0.1,0.2,0.3,0.4,0.5,
      0.6,0.7,0.8,0.9,1.0
      1.1,1.2,1.3,1.4,1.5};
    double xErr[15] = {0.0};

    double y[15] = {
      0.1,0.2,0.3,0.4,0.3
      0.1,0.2,0.3,0.4,0.3
      0.1,0.2,0.3,0.4,0.3};
    double ySys[15] = {
      0.00,0.05,0.06,0.07,0.06,
      0.07,0.05,0.00,0.00,0.07,
      0.08,0.00,0.00,0.00,0.00};

      double yErr[15] = {0.0};
      double yOff1[15] = {0.0};
      double yOff2[15] = {0.0};
      for(int i=0;i<15;i++){
          yErr[i] = 0.1;
          yOff1[i] = -0.8;
          yOff2[i] = -0.5;
      }

    TGraphErrors *TG2 = new TGraphErrors(15,x,yOff1,xErr,ySys);
    TG2->SetMarkerColor(kBlue);
    TG2->SetFillColor(kBlue);
    
    TGraphAsymmErrors *TG3 = new TGraphAsymmErrors(15,x,yOff2,0,xErr,0,ySys);
    TG3->SetMarkerColor(kRed);
    TG3->SetFillColor(kRed);

    TCanvas *c1 = new TCanvas("c1","c1",0,0,400,800);
    c1->Divide(1,2);

    c1->cd(1);
    c1_1->DrawFrame(0,-1,1,0);
    TG2->Draw("P3");
    TG3->Draw("P3");

    c1->cd(2);
    c1_2->DrawFrame(0,-1,2,0);
    TG2->Draw("P3");
    TG3->Draw("P3");
}