Level 29

You see a room which is 10x10m wide (0x0 to 9x9).
Every square has the exact temperature of 2°C. We apply continuously 160°C heat to the field 2x7
What is the temperature (rounded to whole numbers) in the field 2x6 after 135 iterations according to the Gauss-Seidel iteration

Field in the beginning

2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222
2222222222

Field after 4 iterations (rounded after 4th iteration)

0011111100
0111111110
1111121111
1122222211
1488643211
41630241595321
1548915831168421
2790251101452110531
2156996435189521
1025372918105311

Temperature in field 2x6 after 135 iterations: