That’s was the argument back on island and everybody would shoot holes in your choice. Be right or wrong, you were always the sucker. The one exception was the “HeartBreaker” so named because it always under valued the engine’s performance a lot.
You from NY? If so, how close is the weather (at any time of the year) to 60 degrees, a 29.92 barometer and 0 humidity? NY is a decent sized state, with a coast line so I’m sure somewhere you might get weather like that but I suspect in most places you don’t.
You use the corrected numbers for that dyno on that day with that weather.
You use the observed numbers for that day and that weather if it matches the weather at the track. If you can’t get the numbers to match, there are weather stations that take the corrected numbers with the correction factor, measure the weather and the correct the power number to reflect current weather.
If you aren’t willing to do that then your Dyno experience will probably be disappointing.