19:49:04 Write to Excel2007 format<br />19:49:04 File written to 33chartcreate-multiple-charts.xlsx<br />19:49:04 Peak memory usage: 2 MB<br />19:49:04 Done writing file<br />File has been created in /home/fasttech/gymbrain.fasttechsoft.com/vendor/phpoffice/phpexcel/Examples<br />