{
   auto c1 = new TCanvas("c1","Signal-to-noise ratio for different absorber thicknesses",200,10,700,500);   //Making the canvas
   c1->GetFrame()->SetBorderSize(12);   //Setting a boardersize for the canvas

   const Int_t n = 6;
   Double_t x[n]  = {0, 0.36, 0.725, 1.155, 1.485, 1.895};   //Defining the vector for the thickness
   Double_t y[n]  = {16.63559463, 12.50050697, 9.120482874, 6.562466825, 5.106270529, 3.679101254};   //Defining a vector the the signal to noise ratio

   auto gr = new TGraph(n,x,y);   //Making a graph that takes in the vectors as parameters
   gr->SetTitle("Signal-to-noise ratio for different absorber thicknesses; Absorber thickness, x [cm]; Signal-to-noise, I/I_B");    //Setting a main title and titles on the axis
   gr->GetYaxis()->CenterTitle(true);   //Centering the Y-axis
   gr->GetXaxis()->CenterTitle(true);   //Centering the X-axis
   gr->SetMarkerStyle(8);   //Marker is a large scalable dot
   gr->SetMarkerColor(1);   //Marker is black
   gr->SetMarkerSize(0.8);   //Setting the size of the marker
   gr->SetLineColor(9);   //Line is blue
   gr->SetLineWidth(2);   //Setting the width of the line
   gr->Draw("APL");   //Drawing the graph with axis, markers and lines between the points
}