score:2

Accepted answer

pass the data as below

    series:[{
     data: [{
      x: timestamp,
      y: value,
      passCount: someVlaue,
      totalCount: someValue
     }]
    }]

and access it from tooltip 

tooltip:{
 formatter: function() {
  this.point.options.passCount
  this.point.options.total
 }
}

Here is a sample: http://jsfiddle.net/Mn6sB/9.

score:0

Check the tooltip config. There's a sample in the document (pointFormat).

You can also use a function to fully control what you want to render on tooltip. The document is here, with samples.


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