In case you were unaware Ben, correction factors look at more than just altitude. It is an imaginary number created for comparison purposes and NOTHING else. Do you sled at 60*f and 0% humidity too????
STD Correction
STD, or standard correction, represents one of the oldest correction factors used by the Society of Automotive Engineers (SAE). STD is also known as J607 and it uses standard conditions of 60-degrees F, 29.92inHg and 0-percent humidity. For you engine dyno enthusiasts, these factors should look familiar, as STD (J607) is one of the most popular correction factors available and used almost exclusively by NASCAR teams to compare results from chassis dyno testing to results from the engine dyno. STD is also one of the most stable correction factors, in that it has not been changed for many years and the ideal factors remain consistent.