     y: [4300, 4600]
              },
              {
                x: 'Aug',
                y: [null, null]
              }
            ]
          },
        
          {
            type: 'line',
            name: 'Team B Median',
            data: [
              {
                x: 'Jan',
                y: 1500
              },
              {
                x: 'Feb',
                y: 1700
              },
              {
                x: 'Mar',
                y: 1900
              },
      