Highcharts Time Axis

2 series with common X, points missing using nulls

HTML

<script src="https://code.highcharts.com/highcharts.js"></script>
<script src="https://code.highcharts.com/modules/data.js"></script>
<script src="https://code.highcharts.com/modules/exporting.js"></script>

<div id="container" style="min-width: 310px; height: 400px; margin: 0 auto"></div>

JavaScript

$(function() {
  $('#container').highcharts({

    chart: {
      type: 'spline',
      zoomType: 'x'

    },
    xaxis: {
      type: "datetime"
    },

    title: {
      text: 'Data input as row arrays'
    },
    plotOptions: {
      spline: {
        connectNulls: true
      }
    },

    data: {
      rows: [
        ['datetime', 'Orange', 'Ribena'], // series names

        [Date.UTC(2016, 1, 1,10,01,0), 1, 3], // datetime and values
        [Date.UTC(2016, 1, 2), 1, 4], // datetime and values
        [Date.UTC(2016, 1, 3), 1, 5], // datetime and values
        [Date.UTC(2016, 1, 4), null, 4], // datetime and values
        [Date.UTC(2016, 1, 5,10,01,0), 2, null], // datetime and values
        [Date.UTC(2016, 1, 6), 3, 3], // datetime and values
        [Date.UTC(2016, 1, 7), 1, 2] // datetime and values
      ]
    }
  });
});