Highcharts.chart('container', {
    xAxis: {
        categories: [
            'Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
            'Oct', 'Nov', 'Dec'
        ]
    },

    plotOptions: {
        series: {
            marker: {
                states: {
                    hover: {
                        radiusPlus: 5,
                        lineWidthPlus: 2
                    }
                }
            },
            states: {
                hover: {
                    lineWidthPlus: 5
                }
            }
        }
    },

    series: [{
        data: [
            29.9, 71.5, 106.4, 129.2, 144.0, 176.0, 135.6, 148.5, 216.4, 194.1,
            95.6, 54.4
        ],
        lineWidth: 4,
        marker: {
            lineWidth: 2,
            radius: 6
        }
    }]
});