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 191°C heat to the field 7x6
What is the temperature (rounded to whole numbers) in the field 2x1 after 129 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
5811121313131295
59121314151721179
6101314152034483719
61013151834711227735
6101315235012331212850
5911142141811318439
47910152645604624
234581320242011

Temperature in field 2x1 after 129 iterations: