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 154°C heat to the field 8x4
What is the temperature (rounded to whole numbers) in the field 0x0 after 106 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)

1111111121
1222222486
1233337172919
12333618488746
1233410318923983
123341025579550
12334716304125
12334510161912
1222335896
0111122332

Temperature in field 0x0 after 106 iterations: