anchor.diff:  
         tooltip: {
             shared: true,
  -          pointFormat: '<span style="color:{series.color}">{series.name}: <b>{point.y:,.0f}</b><br/>'
  +          pointFormat: '<span style="color:{series.color}">{series.name}: <b>${point.y:,.0f}</b><br/>'
         },
   
         legend: {
  
positive.code:       },
  
        series: [{
            name: 'Cidade 1',
            data: [1, 2, 3, 3, 4, 5, 6, 7],
            pointPlacement: 'on'
        }, {
            name: 'Cidade 2',
            data: [3, 4, 5, 12, 13, 14, 20, 15],
            pointPlacement: 'on'
        }]
  
  
negative.code:       },
  
        title: {
            text: name1+" vs "+name2,
            x: -80
        },
  
  