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 102°C heat to the field 4x1
What is the temperature (rounded to whole numbers) in the field 4x0 after 72 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)

2412305534181052
39246316468331794
410224472493019115
49172837322417115
48131923221915105
4811141617151395
4710121313131184
46810111111973
3567888752
1234444321

Temperature in field 4x0 after 72 iterations: