Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 29°C. We apply continuously 198°C heat to the field 7x6
What is the temperature (rounded to whole numbers) in the field 0x7 after 40 iterations according to the Gauss-Seidel iteration

Field in the beginning

29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929

Field after 4 iterations (rounded after 4th iteration)

4789101010973
712141617171715116
814182022222220168
9162023242528302413
10172224263145594524
101722253046851358740
10172225346213833313955
91519233152931449343
7111517233453685227
3689121724282312

Temperature in field 0x7 after 40 iterations: