         data_temp,
          {
            customBars: true,
            title: 'Daily Temperatures in New York vs. San Francisco',
            ylabel: 'Temperature (F)',
            legend: 'always',
            labelsDivStyles: { 'textAlign': 'right' }
          }
      );
      g2 = new Dygraph(
          document.getElementById("roll14"),
          data_temp,
          {
            rollPeriod: 14,
            showRoller: true,
            customBars: true,
            title: 'Daily Temperatures in New