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 146°C heat to the field 6x9
What is the temperature (rounded to whole numbers) in the field 2x3 after 88 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
610131516161615116
610131415182119147
59111317273831199
47912234883512711
23510246720069269

Temperature in field 2x3 after 88 iterations: