15:19:08 Write to Excel2007 format<br />15:19:08 File written to 33chartcreate-multiple-charts.xlsx<br />15:19:08 Peak memory usage: 6 MB<br />15:19:08 Done writing file<br />File has been created in /home/unidemmx/public_html/UNIDEM/vendor/phpoffice/phpexcel/Examples<br />