title: Highcharts - three series using left Y axis and the fourth using the right Y axis
body: <p>I have a graph where I am displaying three volume series (oil, gas, and water) using the left Y axis.  I need to display another series for the number of wells on this graph using a different scale along the right axis.  the code is shown below:</p>
  
  <pre><code>  $(document).ready(function() {
      $("#tabs").tabs();
      new Highcharts.Chart({
        chart: {
          renderTo: 'volume_chart',
          type: 'line'
        },
        title: {
          text: "#{title_text}"
        },
        xAxis: {
          title: { text: 'Time Period' },
          tickInterval: #{tick_interval},
          categories: #{x_array},
          showLastLabel: true,
          labels: {
            rotation: -45,
            align: 'right',
            style: {
                font: 'normal 13px Verdana, sans-serif'
            }
          }        
        },
        yAxis: {
          title: { text: 'Volume' },
          type: 'logarithmic'
        },
        tooltip: {
          headerFormat: '&lt;b&gt;{series.name}&lt;/b&gt;&lt;br /&gt;',
          pointFormat: 'Period = {point.x}, Volume = {point.y}'
        },
        legend: {
            layout: 'vertical',
            align: 'right',
            verticalAlign: 'top',
            x: -20,
            y: 100,
            borderWidth: 0
        },
        plotOptions: {
            series: {
                marker: {
                    enabled: false,
                    states: {
                        hover: {
                            enabled: true
                        }
                    }
                }
            }
        },
        series: [{
          name: 'Oil, bbl',
          color: 'green',
          data: #{oil_vol_array},
          pointStart: 1
        },{
          name: "Gas, Mcf",
          color: 'red',
          data: #{gas_vol_array},
          pointStart: 1
        },{
          name: 'Water, bbl',
          color: 'blue',
          data: #{water_vol_array},
          pointStart: 1
        }]
      });
    });
  </code></pre>
  
  <p>See the three series for Oil, Gas, and Water volumes respectively.  I need to put in another series for number of wells which uses the Y - axis on the right for displaying number of wells.  This also needs to be a logarithmic type.</p>
  
  <p>I would also like to suppress the last tickValue on the x-axis (please see the attached image:</p>
  
  <p><img src="https://i.stack.imgur.com/Mj8pI.png" alt="The chart display"></p>