Each historical report is designed to display data in both graphical and tabular formats. You can customize the data displayed in the HTML graph report output. To do so, you must set the proper environment variable and identify the specific report fields or column headings that you want to include in the graph output.
See
Graphical output environment variables for more information about the two environment variables that affect graphical output. See
Report output field and column headings for the field and column headings.