title: Multiple lines over google candlestick chart
body: <p>I'm trying to create a google candlestick chart, but also trying to overlay multiple lines on the same chart.  </p>
  
  <p>I'm able to draw one line over the candlestick if I do something like the following:</p>
  
  <pre><code>function drawChart() {
  
  var data = new google.visualization.DataTable();
  data.addColumn('date', 'Date');
  data.addColumn('number', 'Low');
  data.addColumn('number', 'Open');
  data.addColumn('number', 'Close');
  data.addColumn('number', 'High');
  data.addColumn('number', 'Average');
  
  data.addRow('Mon', 1, 1, 2, 2, 1.5]);
  data.addRow('Tue', 2, 2, 3, 3, 2.5]);
  data.addRow('Wed', 2, 2, 4, 4, 3.5]);
  
  var options = {
    legend:'none',
    series: {1: {type: 'line'}}
  };
  </code></pre>
  
  <p>But I can't seem to figure out how to add a second line.  </p>
  
  <p>To avoid confusion, I'll leave out all of the things I've attempted, but the goal is to just add another data column and specify whatever is necessary to tell the chart to overlay the new data as a second line.  </p>
  
  <p>Is there any way to make this work?  </p>