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 141°C heat to the field 1x2
What is the temperature (rounded to whole numbers) in the field 5x5 after 126 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)

142723161187642
408457342115121074
7522597492920161395
4694674329221814105
2545423326211815116
1425272522201815116
916192019181715115
71214161615151395
481011111111973
2456666532

Temperature in field 5x5 after 126 iterations: