Those links don't represent reality. 800 degrees would've fried every single person in those images. If they are not on the "surface", where are they?
Where is this "super hot surface"?
Why are you throwing around links and numbers that have no bearing on reality?
Even if the thermal images are correct (which likely aren't especially since they are from September 16 to 21), it would not be due to conventional heat since no one was burnt and there were millions of unburnt paper throughout.