SG Temp Correction formula

Hello,

I'm looking for the exact formula for the temp correction of a Hydrometer calibrated at 60 deg F.

I take my measurements in Deg C and want to add the formula in an excel sheet to take the SG and the Temp and add the temp correction automatically. I know promash has it but I want to do it in excel and don't know the exact formula. Does anyone know it??

Any help would be much appreciated... Thanks,
Marc

Read this post: http://homebrewtalk.com/showthread.php?t=10684&highlight=hydrometer+temp+correction The 2nd page has the Celsius corrected formula