Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 4°C. We apply continuously 130°C heat to the field 1x8
What is the temperature (rounded to whole numbers) in the field 6x7 after 54 iterations according to the Gauss-Seidel iteration

Field in the beginning

4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444
4444444444

Field after 4 iterations (rounded after 4th iteration)

1111111110
1222222221
1233333321
1233333321
1344444321
3887554331
13252114965431
347347261485421
6419879341685321
326741211153210

Temperature in field 6x7 after 54 iterations: