Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 18°C. We apply continuously 122°C heat to the field 7x2
What is the temperature (rounded to whole numbers) in the field 6x8 after 93 iterations according to the Gauss-Seidel iteration

Field in the beginning

18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818
18181818181818181818

Field after 4 iterations (rounded after 4th iteration)

34566917261910
47910122246784922
5911131836822028433
6101315203358895827
6101316192738473619
6111416182227292413
610131517192121179
59121415161716127
479101112121184
2455666542

Temperature in field 6x8 after 93 iterations: