{
   auto tdf = ROOT::RDF::MakeCsvDataFrame("C:\\!D\\parse.log", true, ',');
   auto d = tdf.Define("TimeStamp", "auto s = string(DateTime); return (float) TDatime(s.c_str()).Convert();")
               .Define("Value", "(float)Delay");
   auto timeStamps = d.Take<float>("TimeStamp");
   auto values = d.Take<float>("Value");

   auto g = new TGraph(values->size(), timeStamps->data(), values->data());
   g->SetTitle("SWAN Users during July 2017;Time;Number of Sessions");
	
   auto c = new TCanvas("c", "c", 950, 500);
   c->SetLeftMargin(0.07);
   c->SetRightMargin(0.04);
   c->SetGrid();
   g->SetLineWidth(3);
   g->SetLineColor(kBlue);
   g->Draw("al");
   g->GetYaxis()->CenterTitle();
 
   auto xaxis = g->GetXaxis();
   xaxis->SetTimeDisplay(1);
   xaxis->CenterTitle();
   xaxis->SetTimeFormat("%H %M");
   xaxis->SetTimeOffset(0);
   xaxis->SetNdivisions(-219);
   //xaxis->SetLimits(TDatime(2021, 10, 14, 2, 0, 0).Convert(), TDatime(2021, 10, 14 10, 0, 0).Convert());
   xaxis->SetLabelSize(0.025);
   xaxis->CenterLabels();	
}