plot(){
  TFile *f = new TFile("trigTest_000001.root","READ");
  
  TProfile *ch0 = (TProfile*)f->Get("ch 0");
  TProfile *ch1 = (TProfile*)f->Get("ch 1");
  TProfile *ch2 = (TProfile*)f->Get("ch 2");
  TProfile *ch3 = (TProfile*)f->Get("ch 3");
  TProfile *ch4 = (TProfile*)f->Get("ch 4");
  TProfile *ch5 = (TProfile*)f->Get("ch 5");
  TProfile *ch6 = (TProfile*)f->Get("ch 6");
  TProfile *ch7 = (TProfile*)f->Get("ch 7");


  TCanvas *c1 = new TCanvas("c1","c1",800,1000);

  c1->Divide(2,4);
  
  c1->cd(1);
  ch0->Draw();

  c1->cd(2);
  ch1->Draw();
  
  c1->cd(3);
  ch2->Draw();
  
  c1->cd(4);
  ch3->Draw();
  
  c1->cd(5);
  ch4->Draw();
  
  c1->cd(6);
  ch5->Draw();
  
  c1->cd(7);
  ch6->Draw();
  
  c1->cd(8);
  ch7->Draw();

  
}