private void btnRemoveHistoricalItem_Click(object sender, RoutedEventArgs e)
        {
            if (SelectedHistoricalData != null && SelectedHistoricalData.Count > 0)
            {
                for (int i = SelectedHistoricalData.Count - 1; i >= 0; i--)
                {
                    for (int j = HistoricalData.Count - 1; j >= 0; j--)
                    {
                        if (HistoricalData[j] == SelectedHistoricalData[i])
                        {
                            HistoricalData.RemoveAt(j);
                            break;
                        }
                    }
                }

                SelectedHistoricalData = null;
            }
        }