Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 7°C. We apply continuously 191°C heat to the field 1x6
What is the temperature (rounded to whole numbers) in the field 9x9 after 52 iterations according to the Gauss-Seidel iteration

Field in the beginning

7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777
7777777777

Field after 4 iterations (rounded after 4th iteration)

1222222221
2334444431
2456665542
5121210876642
1938322214108652
511097240231410752
9729812357291611852
581187946261610752
2850432918128532
111919141064321

Temperature in field 9x9 after 52 iterations: