ขอขอบคุณแหล่งข้อมูลดีๆ
//socialintegrated.com/excel_create_charts
//www.inwexcel.com/basic-graph-chart/
//www.inwexcel.com/basic-graph-chart2/
//www.comtrick.com/?gid=MsOffice&p=MsExcel2GraphIn1Chart
https://reportingengineer.com/2016/04/19/techniquetalkablegraph/#more-11524