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 139°C heat to the field 2x2
What is the temperature (rounded to whole numbers) in the field 1x0 after 126 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)

617292417129752
174888593623171394
298823010052322217116
24591007247322418137
1736524737292419137
1223323229262219147
917222424222018137
713171819191815116
5911131314131184
2467777642

Temperature in field 1x0 after 126 iterations: