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 135°C heat to the field 7x9
What is the temperature (rounded to whole numbers) in the field 0x8 after 124 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
4689999863
5810111212121184
5911131314131295
59121314151413105
59121415151514116
59121314151718158
581112131625342513
4689122244754519
2345922621846220

Temperature in field 0x8 after 124 iterations: