Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 17°C. We apply continuously 168°C heat to the field 8x9
What is the temperature (rounded to whole numbers) in the field 4x7 after 100 iterations according to the Gauss-Seidel iteration

Field in the beginning

17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717
17171717171717171717

Field after 4 iterations (rounded after 4th iteration)

2455666542
4789101010973
5811121313131194
59121314151413105
610131415161514105
610131516161614116
6101314151615161711
591113141418273622
47910101325518844
2345611277522567

Temperature in field 4x7 after 100 iterations: