Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 12°C. We apply continuously 82°C heat to the field 4x8
What is the temperature (rounded to whole numbers) in the field 2x3 after 38 iterations according to the Gauss-Seidel iteration

Field in the beginning

12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212
12121212121212121212

Field after 4 iterations (rounded after 4th iteration)

2334444431
3567777652
3688999863
4789101010974
479101111111074
479121414131184
4711182523181394
4816335638241594
38205213357281584
251327473017952

Temperature in field 2x3 after 38 iterations: