Report the error bars as given; otherwise you're reintroducing the unknown measurement uncertainty factor. Then somewhere in your paper cite ifeffit and make clear that you used that method to determine uncertainties. --Scott Calvin Sarah Lawrence College On Aug 18, 2009, at 7:31 PM, Eugenio Otal wrote:

Hi Scott, I forget the amp, I left the N =1, that is the mistake, sorry I have de S02 from other oxide to transfer it. I found that error bars in Ifeffit are scaled by Chi2 reduced, so should I transform the error or inform them directly as reported? Regards, euG