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 111°C heat to the field 7x5
What is the temperature (rounded to whole numbers) in the field 0x6 after 147 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
1222222321
1233335764
1233361423189
123351436664119
1234824661777127
123481943724621
123361223332513
1223471215137
0111235653

Temperature in field 0x6 after 147 iterations: