google.load('visualization', '1.0', {'packages':['corechart']});
google.setOnLoadCallback(function(){
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       data.addColumn('string', '日');
       data.addColumn('number', 'DL数');
       data.addColumn('number', 'Googleセルラン');
       data.addColumn('number', 'iOSセルラン');
       data.addColumn({type:'string', role:'annotation'});
       data.addColumn({type:'string', role:'annotationText'});
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['2021-08-28',322770,370,552,null,null]
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    'pointSize': 3,
    legend: {position: 'top' },
    vAxes:[
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    ],
    series: {
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        targetAxisIndex: 0,
      },
      1:{
        type: 'line',
        color: 'seagreen',                
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      2:{
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        targetAxisIndex: 1,
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    tooltip: { trigger: 'both' },
    focusTarget: 'category',
    colors:['#2980b9','#e74c3c']
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  var chart = new google.visualization.ComboChart(document.getElementById('graphField'));
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  google.visualization.events.addListener(chart, 'click', function() {
    if(chart.getSelection()[0]){
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});