10:16:30 Write to Excel2007 format<br />10:16:30 File written to 33chartcreate-column.xlsx<br />10:16:30 Peak memory usage: 2.25 MB<br />10:16:30 Done writing file<br />File has been created in /var/www/html/onswitch.neon/vendor/phpoffice/phpexcel/Examples<br />