The “regulars” know all this but it makes a very worthwhile point that the EGT measured is actually a very rough average, derived by averaging the temperature of a bit of hot gas popping out through the exhaust valve once in a while, against no gas flow most of the time.
That’s why the absolute EGT value has almost no meaning.
Thanks for the link.
It never occurred to me to worry about the absolute temp. of the EGT display on the G1000 – but now I’m equipped with arguments if somebody should question me why I don’t. 
Nice article. Perhaps a missed opportunity to explain why EGTs rise during a mag check.
Thank you. Very interesting.
Alan,
Have a look at the site Peter linked above under “Learn more – Articles – Understanding CHT and EHT” and you will find what you are looking for.
