Add horizontal line to chart

http://peltiertech.com/Excel/Charts/AddLine.html
http://tushar-mehta.com/excel/charts...nes/index.html
http://www.andypope.info/charts/averageline.htm
http://www.processtrends.com/pg_char...ontal_line.htm

best wished
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Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
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"RWS" wrote in message
...
I would like to put median and upper and lower boundry lines in an excel
chart? Any clues out there?