18:04:25 Write to Excel2007 format<br />18:04:25 File written to 33chartcreate-multiple-charts.xlsx<br />18:04:25 Peak memory usage: 2 MB<br />18:04:25 Done writing file<br />File has been created in /home/fasttech/gymbrain.fasttechsoft.com/vendor/phpoffice/phpexcel/Examples<br />