Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 20°C. We apply continuously 167°C heat to the field 4x4
What is the temperature (rounded to whole numbers) in the field 4x4 after 38 iterations according to the Gauss-Seidel iteration

Field in the beginning

20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020
20202020202020202020

Field after 4 iterations (rounded after 4th iteration)

3566787652
5810141818161395
610163045392920137
6143065111764729189
7184511127912263362110
81839761228655352110
716294763554129199
613202936352923157
59131821211915105
257910109753

Temperature in field 4x4 after 38 iterations: