Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 15°C. We apply continuously 97°C heat to the field 7x6
What is the temperature (rounded to whole numbers) in the field 6x2 after 82 iterations according to the Gauss-Seidel iteration

Field in the beginning

15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515

Field after 4 iterations (rounded after 4th iteration)

2445555532
4678999863
479111111111084
58111213131415127
591113131623302312
591113152342674320
5911131731681646927
581012162646714621
3689121726342613
2345691214116

Temperature in field 6x2 after 82 iterations: