{
  auto am241=new TH1F("am241",
		     "Count Rate;N_{counts};# occurencies",
		     100,
		     -0.5,
		     6000);
  ifstream inp; double x;
  inp.open("Am241.txt");
  for (int i=1; i<6000; i++) {
    inp >> x;
    am241->SetBinContent(i,x);
  }
  am241->Draw();
}