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       data.addColumn('number', 'DL数');
       data.addColumn('number', 'Googleセルラン');
       data.addColumn('number', 'iOSセルラン');
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['2020-08-26',70846,null,842,null,null],
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['2020-08-29',70879,null,524,null,null],
['2020-08-30',70879,null,415,null,null],
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['2020-09-12',71071,null,390,null,null],
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