Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 29°C. We apply continuously 192°C heat to the field 8x6
What is the temperature (rounded to whole numbers) in the field 1x1 after 89 iterations according to the Gauss-Seidel iteration

Field in the beginning

29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929
29292929292929292929

Field after 4 iterations (rounded after 4th iteration)

4789101010973
712141617171715116
814182022222219159
9162023242524252415
10172224262631425232
101722252630458012465
10172224273461131313111
91519222431508713068
7111517182333495835
3689101216222415

Temperature in field 1x1 after 89 iterations: