I have a chart which tracks workhours per week. Across the bottom are the
dates representing the ends of the weeks (1/7/07 through 12/30/07), and along
the left are possible hours per week (0 through 70). I am using a line chart
with markers.

I would like to add a base line or indicator line across the chart at 45
hours.

How can I add a base line at 45 hours. (I don't have the base line data in
my spreadsheet.)

Thank you for your help.

Darrell