Chart only the last 25 readings

[Goody61865]

I am building a chart on running data in a column and I would like to only chart the last 25 readings. I have searched the forum and found nothing that related to this, is there a way to do it?

 

[VoG]

This should help http://peltiertech.com/Excel/Charts/DynamicLast12.html

 

[Goody61865]

There was good stuff there that was close, but all of them grew the charts as data was added. I only want the last 25 to be shown.

To be honest, this may be above my level of knowledge because I was pretty confused.

Thanks for the link though,