17:14:19 Write to Excel2007 format<br />17:14:19 File written to 33chartcreate-column.xlsx<br />17:14:19 Peak memory usage: 4 MB<br />17:14:19 Done writing file<br />File has been created in /home/fasttech/gymbrain.fasttechsoft.com/vendor/phpoffice/phpexcel/Examples<br />