Setting intervalType to minute solved it! Thank you!
However, those values are some Integers, how can i get the Date values ? Can i set somewhere the type to Date ?
My options object looks like this: { zoomEnabled: true, title: { text: “Temperature History” }, rangeChanged: null, data: [ { type: “line”, showInLegend: true, name: “Temperature”, legendText: “Temperature”, lineThickness: 1, markerType: “circle”, //markerSize: 3, legendMarkerType: “circle”, dataPoints: [ ] }, { type: “line”, legendText: “Temperature Set”, name: “TemperatureSet”, showInLegend: true, lineThickness: 1, markerType: “triangle”, //markerSize: 3, legendMarkerType: “triangle”, dataPoints: [] } ] }