Three lined line chart

by ian_smithz

HTML

<script src="https://code.highcharts.com/highcharts.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'
            },
            title: {
                text: 'Snow depth at Vikjafjellet, Norway'
            },
            subtitle: {
                text: 'Irregular time data in Highcharts JS'
            },
            xAxis: {
                type: 'datetime',
                dateTimeLabelFormats: { // don't display the dummy year
                    month: '%e. %b',
                    year: '%b'
                },
                title: {
                    text: 'Date'
                }
            },
            yAxis: {
                title: {
                    text: 'Snow depth (m)'
                },
                min: 0
            },
            tooltip: {
                headerFormat: '<b>{series.name}</b><br>',
                pointFormat: '{point.x:%e. %b}: {point.y:.2f} m'
            },

            series: [{
                name: 'Winter 2007-2008',
                // Define the data points. All series have a dummy year
                // of 1970/71 in order to be compared on the same x axis. Note
                // that in JavaScript, months start at 0 for January, 1 for February etc.
                data: [
                    [Date.UTC(1970,  9, 27), 0   ],
                    [Date.UTC(1970, 10, 10), 0.6 ],
                    [Date.UTC(1970, 10, 18), 0.7 ],
                    [Date.UTC(1970, 11,  2), 0.8 ],
                    [Date.UTC(1970, 11,  9), 0.6 ],
                    [Date.UTC(1970, 11, 16), 0.6 ],
                    [Date.UTC(1970, 11, 28), 0.67],
                    [Date.UTC(1971,  0,  1), 0.81],
                    [Date.UTC(1971,  0,  8), 0.78],
                    [Date.UTC(1971,  0, 12), 0.98],
                    [Date.UTC(1971,  0, 27), 1.84],
                    [Date.UTC(1971,  1, 10), 1.80],
                    [Date.UTC(1971,  1, 18), 1.80],
                    [Date.UTC(1971,  1, 24), 1.92],
           ...