JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://www.google.com/jsapi?.js"></script>
<div id="chart_div"></div>

JavaScript

function drawChart () {
    var data = google.visualization.arrayToDataTable([
        ['X', 'Y', 'vertical line', {type: 'boolean', role: 'certainty'}],
        [1, 5, null, null],
        [2, 2, null, null],
        // put the vertical line here
        [3, 6, 0, false],
        // this is the duplicate row
        [3, 6, 10, false],
        [4, 7, null, null]
    ]);
    
    var chart = new google.visualization.ComboChart(document.querySelector('#chart_div'));
    chart.draw(data, {
        height: 400,
        width: 600,
        series: {
            1: {
                // hide the vertical line from the legend
                showInLegend: false,
                enableInteractivity: false
            }
        },
        vAxis: {
            viewWindow: {
                min: 0,
                max: 8
            }
        }
    });
}
google.load('visualization', '1', {packages:['corechart'], callback: drawChart});