Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 9°C. We apply continuously 162°C heat to the field 1x7
What is the temperature (rounded to whole numbers) in the field 3x8 after 122 iterations according to the Gauss-Seidel iteration

Field in the beginning

9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999
9999999999

Field after 4 iterations (rounded after 4th iteration)

1233333321
2445555542
3466777652
3678888753
61213121099763
17342921151210863
44946337221411863
8325410550261611853
4899663822139642
203730201285321

Temperature in field 3x8 after 122 iterations: