how much of a difference are the times in ...ohh say florida compared to the time in ohio-- take the same car for instance running a time in florida, then running a time in ohio- how big of a difference would it be?

 

For an exact answer we would need time at sea level (elevation helps) vs elevation at above sea level track.

The NHRA uses a table for elevation I use.

 

Vegas is at 2400 ft and I run 14.1@98mph ( drag radials )
Sacramento is at sea level I run 13.40's @100mph (slicks)

 

Here is an equation that is a pretty close approximation of the decrease in ET due to elevation. Multiply the result of this equation by your ET at sea level to see what you would run at a given elevation. Or divide your ET at a given height by the result of this equation to approximate what a sea level run would have been.

Elev Corr = (1-(6.88e-6 * elevation in feet))^5.26