Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 16°C. We apply continuously 84°C heat to the field 7x5
What is the temperature (rounded to whole numbers) in the field 6x6 after 88 iterations according to the Gauss-Seidel iteration

Field in the beginning

16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616
16161616161616161616

Field after 4 iterations (rounded after 4th iteration)

2455555542
4689999974
58101112121314116
591113131622272111
591213162339603918
5912141830621446225
591214182744654320
581112152028342613
468911141718158
2345678874

Temperature in field 6x6 after 88 iterations: