Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 10°C. We apply continuously 197°C heat to the field 8x1
What is the temperature (rounded to whole numbers) in the field 6x3 after 67 iterations according to the Gauss-Seidel iteration

Field in the beginning

10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010
10101010101010101010

Field after 4 iterations (rounded after 4th iteration)

12333620539849
245671440113302103
3567815357412164
367891325425433
367891217242717
368991113151510
36789101111106
3578899874
2456666642
1233333321

Temperature in field 6x3 after 67 iterations: