Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 13°C. We apply continuously 120°C heat to the field 7x3
What is the temperature (rounded to whole numbers) in the field 6x7 after 53 iterations according to the Gauss-Seidel iteration

Field in the beginning

13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313
13131313131313131313

Field after 4 iterations (rounded after 4th iteration)

2344446974
356781119282211
4689122145764822
479111633791978132
481011162954855526
481012152234433317
481011131722252011
4791011131516137
357789101084
2334455542

Temperature in field 6x7 after 53 iterations: