Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 15°C. We apply continuously 194°C heat to the field 9x7
What is the temperature (rounded to whole numbers) in the field 4x9 after 89 iterations according to the Gauss-Seidel iteration

Field in the beginning

15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515
15151515151515151515

Field after 4 iterations (rounded after 4th iteration)

2445555532
4678999863
479111111111084
5811121313131195
591113131413121211
591113141414172630
591113131417305887
58101112132043104263
368991016326188
2344569162628

Temperature in field 4x9 after 89 iterations: