span>',
  useHTML: true
});

var scatterChart = new Highcharts.Chart({
  chart: {
    renderTo: 'container_response_time_dispersion', 
    defaultSeriesType: 'scatter',
    zoomType: 'xy',
    marginBottom: 90
  },
  credits: { enabled: false },
  xAxis: {
    title: {
      enabled: true,
      text: 'Global number of requests per second',
      style: { fontWeight: 'bold' }
    },
    startOnTick: true,
    endOnTick: true,
    showLastLabel: true,
    min: 0
  },
  title: { text: 'A title to let highchar