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 179°C heat to the field 7x4
What is the temperature (rounded to whole numbers) in the field 4x6 after 56 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)

2334444442
3567771013116
368891326403116
47891327621106931
47911184311228911745
479111836741217836
47911152643584523
4689121725302514
35678111416137
1234456763

Temperature in field 4x6 after 56 iterations: