Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 1°C. We apply continuously 156°C heat to the field 4x4
What is the temperature (rounded to whole numbers) in the field 9x8 after 79 iterations according to the Gauss-Seidel iteration

Field in the beginning

1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111
1111111111

Field after 4 iterations (rounded after 4th iteration)

0000111100
0003764311
00416292314741
0316468956291473
17298924598431994
1623569864351894
1414294335231373
13714191813852
0147997531
0113443211

Temperature in field 9x8 after 79 iterations: