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 195°C heat to the field 2x6
What is the temperature (rounded to whole numbers) in the field 4x0 after 135 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
368910109863
41016171513111074
92644372719151184
2264119794628191394
371163131326334211494
2874129875231201384
173958483422151063
817232216128532

Temperature in field 4x0 after 135 iterations: