Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 8°C. We apply continuously 133°C heat to the field 0x8
What is the temperature (rounded to whole numbers) in the field 4x0 after 43 iterations according to the Gauss-Seidel iteration

Field in the beginning

8888888888
8888888888
8888888888
8888888888
8888888888
8888888888
8888888888
8888888888
8888888888
8888888888

Field after 4 iterations (rounded after 4th iteration)

1223333221
2344555432
2456666542
3466777652
3567777653
7999888753
202015121088753
584226161197642
1787133171076532
53362011643221

Temperature in field 4x0 after 43 iterations: