20:37:31 Write to Excel2007 format<br />20:37:31 File written to 33chartcreate-multiple-charts.xlsx<br />20:37:31 Peak memory usage: 2 MB<br />20:37:31 Done writing file<br />File has been created in /home/hycmvsgn/heal.co.ke/invoices/vendor/phpoffice/phpexcel/Examples<br />