17:55:01 Write to Excel2007 format<br />17:55:02 File written to 33chartcreate-multiple-charts.xlsx<br />17:55:02 Peak memory usage: 4 MB<br />17:55:02 Done writing file<br />File has been created in /home/fasttech/gymbrain.fasttechsoft.com/vendor/phpoffice/phpexcel/Examples<br />