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 189°C heat to the field 7x6
What is the temperature (rounded to whole numbers) in the field 2x7 after 122 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
3688999974
478910101317148
47910111529443417
479101429661167333
47911184511730512348
468101737761268037
3568122341564322
123461118231910

Temperature in field 2x7 after 122 iterations: