private void displayGraph()
 {
     centerAvgGraph.Clear();
     centerAvgGraph          = GenerateRandomSerie(10, new DateTime(2000, 1, 1));
     XAxis.MajorTickInterval = 2;
     MaxY          = MaxScale + 10.0;
     YAxis.Maximum = MaxY;
     ReferenceGraph.Series[0].ItemsSource = centerAvgGraph;
     ReferenceGraph.Series[1].ItemsSource = GenerateRandomSerie(5, new DateTime(2000, 1, 1));
     ReferenceGraph.Series[2].ItemsSource = GenerateRandomSerie(5, new DateTime(2000, 6, 1));
 }