Who cares?
We do. Every pilot records them every day, and a power check in flight too.
We trend them, and have caught problems early that way.
All installed in 500's
C20B#1 shows a low of 426C@-6C OAT to 544 at 40C 2,000pa (A miserable humid day in NW Missouri)
C20B#2 shows a low of 423@-1C 517@32C 2,000pa
Pretty much linier movement in-between,
C20Rs run hotter
My weakest C20R is showing 518C at 0C and 608C at 33C at sea level
A stronger C20R I have is showing 492 at -4C (3000') 605C at 38C at 2000' pa
Another strong one was showing 498C at -9 (6000') and has been consistently showing 601C at 28 (3000') lately.
Average is about about 500 at 0C and 590s at 33C near sea level