Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 5°C. We apply continuously 164°C heat to the field 1x5
What is the temperature (rounded to whole numbers) in the field 2x5 after 90 iterations according to the Gauss-Seidel iteration

Field in the beginning

5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555
5555555555

Field after 4 iterations (rounded after 4th iteration)

1112222211
1333333321
4998654431
163226171176432
4393613418117532
832551054824138642
49101683922138642
2444382617117532
111919151185421
4887543211

Temperature in field 2x5 after 90 iterations: