To display percentile lines
main topic     example     see also 

1    In the Graph dialog box, click Scale, then click the Percentile Lines tab.

2    In Show percentile lines at Y values, type the y-scale values for displaying percentile lines. Separate multiple entries with a space.

3    In Show percentile lines at data values, type the data values for displaying percentile lines. Separate multiple entries with a space.

4    Click OK.