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 102°C heat to the field 7x2
What is the temperature (rounded to whole numbers) in the field 7x0 after 30 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)

1111141118147
122241232593616
1233721601626525
123471839664219
123461222312412
1234581215137
1233468974
1233445542
1222333321
0111112111

Temperature in field 7x0 after 30 iterations: