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 134°C heat to the field 7x0
What is the temperature (rounded to whole numbers) in the field 9x5 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)

1112619581806019
122371842734319
123471325342613
2344691418158
23445791095
2344567763
2344555542
2334444432
1233333321
1111222111

Temperature in field 9x5 after 90 iterations: