',
        count : 1,
        text : 'All'
      }
    ],
    selected : 3,
    inputEnabled : false
  },
  xAxis: {
    type: 'datetime',
    ordinal: false,
    maxZoom: 10000 // three days
  },
  yAxis:[
    {
      min: 0,
      title: { text: 'Response Time (ms)' },
      opposite: false
    }, {
      min: 0,
      title: {
        text: 'Active Users',
        style: { color: '#FFA900' }
      },
      opposite: true
    }
  ],
  plotOptions: {
    arearange: { lineWidth: 1 },
    series: {
      dat