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 143°C heat to the field 6x5
What is the temperature (rounded to whole numbers) in the field 5x7 after 130 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
2344555542
245668121184
346610213226168
3569214988573113
357133388231964318
35712275896643516
24610183245372411
234611172220147
1223589963

Temperature in field 5x7 after 130 iterations: